diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
new file mode 100644
index 0000000..ba18a20
--- /dev/null
+++ b/.devcontainer/devcontainer.json
@@ -0,0 +1,33 @@
+{
+  "name": "Debian",
+  "image": "mcr.microsoft.com/devcontainers/base:debian",
+
+  "features": {
+    "ghcr.io/devcontainers/features/github-cli:1": {},
+    "ghcr.io/devcontainers/features/rust:1": {},
+    "ghcr.io/devcontainers/features/node:1": {},
+    "ghcr.io/guiyomh/features/just:0": {}
+  },
+
+  "forwardPorts": [3000],
+  "customizations": {
+    "vscode": {
+      "extensions": [
+        "GitHub.copilot",
+        "GitHub.copilot-chat",
+        "github.vscode-github-actions",
+
+        "rust-lang.rust-analyzer",
+        "tamasfe.even-better-toml",
+        "serayuzgur.crates",
+        "vadimcn.vscode-lldb",
+
+        "esbenp.prettier-vscode",
+        "dbaeumer.vscode-eslint",
+        "svelte.svelte-vscode"
+      ]
+    }
+  },
+  "remoteUser": "vscode",
+  "postCreateCommand": "sudo apt-get update && sudo apt-get install -y emscripten && rustup target add wasm32-unknown-emscripten"
+}
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b04772c..1fb6e84 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,12 +15,6 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
-      - name: Add release date to index.html
-        run: |
-          VERSION="$(date +'%Y-%m-%d %H:%M')"
-          sed --in-place "s/<VERSION>/$VERSION/g" index.html
-        shell: bash
-
       - name: Setup emscripten SDK
         uses: mymindstorm/setup-emsdk@v14
         with:
@@ -29,6 +23,11 @@ jobs:
       - name: Verify emscripten
         run: emcc -v
 
+      - name: Setup just
+        uses: extractions/setup-just@v2
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
       - name: Setup Stable Rust with emscripten target
         run: rustup target add wasm32-unknown-emscripten
 
@@ -41,16 +40,33 @@ jobs:
       - name: Cargo fmt
         run: cargo fmt --all --check
 
-      - name: Cargo test
-        run: cargo test
+      - name: Test
+        run: just test
+
+      - name: Build site
+        run: just b
+
+      - name: Install Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: npm
+          cache-dependency-path: app/package-lock.json
+
+      - name: Install dependencies
+        run: npm ci
+        working-directory: app
+
+      - name: build
+        run: |
+          npm run build
+        working-directory: app
 
-      - name: Build site into the public/ dir
-        run: ./script/build.sh
 
       - uses: actions/upload-pages-artifact@v3
         if: ${{ github.event_name != 'pull_request' }}
         with:
-          path: './public'
+          path: './app/dist'
           retention-days: '1'
 
   deploy:
diff --git a/.gitignore b/.gitignore
index 93b6069..4d0b68a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,4 +9,5 @@
 **/*.pdb
 
 # Static
-**/public/
+**/public/pa.wasm
+**/public/pa.js
diff --git a/.vscode/extensions.json b/.vscode/extensions.json
new file mode 100644
index 0000000..caf2064
--- /dev/null
+++ b/.vscode/extensions.json
@@ -0,0 +1,11 @@
+{
+    "recommendations": [
+        "rust-lang.rust-analyzer",
+        "tamasfe.even-better-toml",
+        "serayuzgur.crates",
+        "vadimcn.vscode-lldb",
+        "esbenp.prettier-vscode",
+        "dbaeumer.vscode-eslint",
+        "svelte.svelte-vscode"
+    ]
+}
diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..f7dde78
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,8 @@
+{
+  "rust-analyzer.check.command": "clippy",
+  "rust-analyzer.checkOnSave": true,
+  "svelte.enable-ts-plugin": true,
+  "[svelte]": {
+    "editor.defaultFormatter": "svelte.svelte-vscode"
+  }
+}
diff --git a/Cargo.toml b/Cargo.toml
index c25b0a4..6d8ab1b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,10 +1,13 @@
 [workspace]
-members = [
-    "dist",
-    "power"
-]
+members = ["dist", "power"]
 resolver = "2"
 
 [profile.release]
 # Tell `rustc` to optimize for small code size.
 opt-level = "s"
+
+[workspace.package]
+authors = [
+    "Rik Huijzer <rust@huijzer.xyz>",
+    "Jose Storopoli <jose@storopoli.io>",
+]
diff --git a/README.md b/README.md
index 36ea546..d31468c 100644
--- a/README.md
+++ b/README.md
@@ -4,12 +4,14 @@ Statistical power analyses in the browser via R's nmath library and WebAssembly.
 
 ## License
 
-The favicon is obtained from Flaticon (https://www.flaticon.com/free-icon/statistics_4064965).
+The favicon is obtained from [Flaticon](https://www.flaticon.com/free-icon/statistics_4064965).
 
 ## Developer notes
 
 Going via emscripten because we link a C library.
 
-A big thanks to https://github.com/rustwasm/team/issues/291#issuecomment-644946504 for writing down how to build a C library to WebAssembly via Rust.
+A big thanks to [`rustwasm/team`](https://github.com/rustwasm/team/issues/291#issuecomment-644946504)
+for writing down how to build a C library to WebAssembly via Rust.
 
-For development, checkout the scripts in the [`scripts` folder](https://github.com/poweranalyses-org/poweranalyses/tree/main/script).
+For development, checkout the scripts in the [`justfile`](https://github.com/poweranalyses-org/poweranalyses/tree/main/justfile).
+If you are lazy just run `just`.
diff --git a/app/.gitignore b/app/.gitignore
new file mode 100644
index 0000000..a547bf3
--- /dev/null
+++ b/app/.gitignore
@@ -0,0 +1,24 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+node_modules
+dist
+dist-ssr
+*.local
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+.DS_Store
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?
diff --git a/app/README.md b/app/README.md
new file mode 100644
index 0000000..3d1dc58
--- /dev/null
+++ b/app/README.md
@@ -0,0 +1,6 @@
+# Svelte + Vite
+
+This is the App's reactive frontend.
+
+The app is built with [Svelte](https://svelte.dev) and Vite.
+We are using Svelte 5 for reactivity and leaning heavily in the new Runes API.
diff --git a/app/index.html b/app/index.html
new file mode 100644
index 0000000..86687c1
--- /dev/null
+++ b/app/index.html
@@ -0,0 +1,25 @@
+<!doctype html>
+<html lang="en">
+
+<head>
+    <title>PowerAnalyses.org</title>
+    <link rel="icon" href="./src/assets/favicon.png" />
+    <link rel="stylesheet" href="./src/assets/style.css" />
+    <script src="./pa.js"></script>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+</head>
+
+<body>
+    <noscript>
+        <br />
+        <center>
+            This site only works with WebAssembly. Enable WebAssembly in your
+            browser to continue.
+        </center>
+    </noscript>
+    <div id="app"></div>
+    <script type="module" src="./src/main.js"></script>
+</body>
+
+</html>
diff --git a/app/jsconfig.json b/app/jsconfig.json
new file mode 100644
index 0000000..85821c2
--- /dev/null
+++ b/app/jsconfig.json
@@ -0,0 +1,44 @@
+{
+    "compilerOptions": {
+        "moduleResolution": "bundler",
+        "target": "ESNext",
+        "module": "ESNext",
+        /**
+     * svelte-preprocess cannot figure out whether you have
+     * a value or a type, so tell TypeScript to enforce using
+     * `import type` instead of `import` for Types.
+     */
+        "verbatimModuleSyntax": true,
+        "isolatedModules": true,
+        "resolveJsonModule": true,
+        /**
+     * To have warnings / errors of the Svelte compiler at the
+     * correct position, enable source maps by default.
+     */
+        "sourceMap": true,
+        "esModuleInterop": true,
+        "skipLibCheck": true,
+        /**
+     * Typecheck JS in `.svelte` and `.js` files by default.
+     * Disable this if you'd like to use dynamic types.
+     */
+        "checkJs": true,
+        "plugins": [
+            {
+                "name": "typescript-svelte-plugin",
+                // the following options can be set additionally; they are optional; their default values are listed here
+                "enabled": true, // enables this plugin
+                "assumeIsSvelteProject": false // if true, skip detection and always assume it's a Svelte project
+            }
+        ]
+    },
+    /**
+   * Use global.d.ts instead of compilerOptions.types
+   * to avoid limiting type declarations.
+   */
+    "include": [
+        "src/**/*.d.ts",
+        "src/**/*.js",
+        "src/**/*.svelte"
+    ]
+}
diff --git a/app/package-lock.json b/app/package-lock.json
new file mode 100644
index 0000000..3589b82
--- /dev/null
+++ b/app/package-lock.json
@@ -0,0 +1,1048 @@
+{
+    "name": "app",
+    "version": "0.1.0",
+    "lockfileVersion": 3,
+    "requires": true,
+    "packages": {
+        "": {
+            "name": "app",
+            "version": "0.1.0",
+            "devDependencies": {
+                "@sveltejs/vite-plugin-svelte": "^3.0.2",
+                "svelte": "^5.0.0-next.70",
+                "vite": "^5.1.4"
+            }
+        },
+        "node_modules/@ampproject/remapping": {
+            "version": "2.2.1",
+            "resolved": "https://registry.npmjs.org/@ampproject/remapping/-/remapping-2.2.1.tgz",
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+            "dev": true,
+            "dependencies": {
+                "@jridgewell/gen-mapping": "^0.3.0",
+                "@jridgewell/trace-mapping": "^0.3.9"
+            },
+            "engines": {
+                "node": ">=6.0.0"
+            }
+        },
+        "node_modules/@esbuild/aix-ppc64": {
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+            "cpu": [
+                "ppc64"
+            ],
+            "dev": true,
+            "optional": true,
+            "os": [
+                "aix"
+            ],
+            "engines": {
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+            }
+        },
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+            "dev": true,
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+                "locate-character": "^3.0.0",
+                "magic-string": "^0.30.5",
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+            },
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+            "dev": true,
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+                "url": "https://github.com/vitejs/vite?sponsor=1"
+            },
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+                "fsevents": "~2.3.3"
+            },
+            "peerDependencies": {
+                "@types/node": "^18.0.0 || >=20.0.0",
+                "less": "*",
+                "lightningcss": "^1.21.0",
+                "sass": "*",
+                "stylus": "*",
+                "sugarss": "*",
+                "terser": "^5.4.0"
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+            "peerDependenciesMeta": {
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+                "sugarss": {
+                    "optional": true
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+                "terser": {
+                    "optional": true
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+            }
+        },
+        "node_modules/vitefu": {
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+            "dev": true,
+            "peerDependencies": {
+                "vite": "^3.0.0 || ^4.0.0 || ^5.0.0"
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+                "vite": {
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+                }
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+        "node_modules/zimmerframe": {
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+            "dev": true
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+    }
+}
diff --git a/app/package.json b/app/package.json
new file mode 100644
index 0000000..9a71580
--- /dev/null
+++ b/app/package.json
@@ -0,0 +1,20 @@
+{
+    "name": "app",
+    "contributors": [
+        "Jose Storopoli <jose@storopoli.io>",
+        "Rik Huijzer <rust@huijzer.xyz>"
+    ],
+    "private": true,
+    "version": "0.1.0",
+    "type": "module",
+    "scripts": {
+        "dev": "vite",
+        "build": "vite build",
+        "preview": "vite preview"
+    },
+    "devDependencies": {
+        "@sveltejs/vite-plugin-svelte": "^3.0.2",
+        "svelte": "^5.0.0-next.70",
+        "vite": "^5.1.4"
+    }
+}
diff --git a/favicon.png b/app/public/favicon.png
similarity index 100%
rename from favicon.png
rename to app/public/favicon.png
diff --git a/app/src/App.svelte b/app/src/App.svelte
new file mode 100644
index 0000000..2dd8b65
--- /dev/null
+++ b/app/src/App.svelte
@@ -0,0 +1,118 @@
+<script context="module">
+    function writeToPtr(ptr, text) {
+        const buffer = Module.HEAPU8.buffer;
+        const view = new Uint8Array(buffer, ptr, 1024);
+        const encoder = new TextEncoder();
+        const with_stop = text + "<END>";
+        view.set(encoder.encode(with_stop));
+    }
+
+    function readFromPtr(ptr) {
+        const buffer = Module.HEAPU8.buffer;
+        const view = new Uint8Array(buffer, ptr, 1024);
+        const length = view.findIndex(byte => byte === 0);
+        const decoder = new TextDecoder();
+
+        return decoder.decode(new Uint8Array(buffer, ptr, length));
+    }
+
+    /**
+     * Calculates statistical analysis results by interfacing with a WebAssembly module.
+     * This function serializes input parameters into JSON, sends them to the WebAssembly backend,
+     * and then parses the JSON response to return the result.
+     *
+     * @param {string} test - The type of statistical test being performed.
+     * @param {string} analysis - The analysis type (e.g., 'n', 'es', 'power', 'alpha').
+     * @param {number} n - The sample size.
+     * @param {number} alpha - The significance level (α).
+     * @param {number} power - The statistical power (1 - β).
+     * @param {number} es - The effect size.
+     * @param {number} tail - The number of tails in the test (1 or 2).
+     * @param {number} allocRatio - The allocation ratio for different groups.
+     * @param {number} k - The number of groups for some tests.
+     * @param {number} p - The number of predictors for multiple regression.
+     * @param {number} q - The number of dependent variables for MANOVA.
+     * @param {number} m - The total number of measurements for repeated measures ANOVA.
+     * @param {number} rho - The assumed population correlation coefficient.
+     * @param {number} epsilon - The non-sphericity correction coefficient.
+     * @param {number} nPredictors - The number of predictors in the model.
+     * @param {number} df - The degrees of freedom for the test.
+     * @returns {Object} An object containing the calculation result, keyed by the type of analysis.
+     */
+    function getOutput(test, analysis, n, alpha, power, es, tail, allocRatio, k, p, q, m, rho, epsilon, nPredictors, df) {
+        const state = {
+            "test": test,
+            "analysis": analysis,
+            "n": n,
+            "alpha": alpha,
+            "power": power,
+            "es": es,
+            "tail": tail,
+            "allocRatio": allocRatio.toString(),
+            "k": k.toString(),
+            "p": p.toString(),
+            "q": q.toString(),
+            "m": m.toString(),
+            "rho": rho.toString(),
+            "epsilon": epsilon.toString(),
+            "nPredictors": nPredictors.toString(),
+            "df": df.toString()
+        };
+        const json = JSON.stringify(state);
+        console.log(`Sending the following json to the back end: ${json}`);
+
+        const ptr = Module._alloc();
+        writeToPtr(ptr, json);
+        Module._calculatePower(ptr);
+        const returned = readFromPtr(ptr);
+        Module._dealloc(ptr);
+        console.log(`Received the following json from the back end: ${returned}`);
+        const result = JSON.parse(returned);
+        const id = Object.keys(result)[0];
+
+        return result;
+    }
+</script>
+
+<script>
+    // General components
+    let family = $state("t");
+    let test = $state("oneSampleTTest");
+    let analysis = $state("n");
+
+    // Analysis
+    let n = $state(50);
+    let alpha = $state(0.05);
+    let power = $state(0.95);
+    let es = $state(0.5);
+
+    // T-test stuff
+    let tail = $state("1");
+    let allocRatio = $state(1);
+
+    // F-test stuff
+    let k = $state(5);
+    let p = $state(2);
+    let q = $state(10);
+    let m = $state(2);
+    let rho = $state(0.5);
+    let epsilon = $state(1);
+    let nPredictors = $state(2);
+
+    // Chi-squared test stuff
+    let df = $state(5)
+
+    import Footer from './lib/Footer.svelte';
+    import Options from './lib/Options.svelte';
+</script>
+
+<div class="content">
+    <div class="title center">
+        <img class="favicon" src="./favicon.png" alt="favicon" />
+          PowerAnalyses.org Beta
+    </div>
+
+    <Options getOutput={getOutput} family={family} test={test} analysis={analysis} n={n} alpha={alpha} power={power} es={es} tail={tail} allocRatio={allocRatio} k={k} p={p} q={q} m={m} rho={rho} epsilon={epsilon} nPredictors={nPredictors} df={df} />
+<Footer />
+</div>
+
diff --git a/app/src/assets/.gitignore b/app/src/assets/.gitignore
new file mode 100644
index 0000000..2d9e9fb
--- /dev/null
+++ b/app/src/assets/.gitignore
@@ -0,0 +1,2 @@
+pa.wasm
+pa.js
diff --git a/app/src/assets/favicon.png b/app/src/assets/favicon.png
new file mode 100644
index 0000000..82d2d22
Binary files /dev/null and b/app/src/assets/favicon.png differ
diff --git a/style.css b/app/src/assets/style.css
similarity index 100%
rename from style.css
rename to app/src/assets/style.css
diff --git a/app/src/lib/Footer.svelte b/app/src/lib/Footer.svelte
new file mode 100644
index 0000000..f68f336
--- /dev/null
+++ b/app/src/lib/Footer.svelte
@@ -0,0 +1,27 @@
+<script>
+    const date = new Date();
+    const today = date.toISOString();
+</script>
+
+<br>
+<br>
+<br>
+<div style="font-size: 1rem">
+  <center><b>Why this web site?</b></center><br>
+  Statistical power analyses play a key role in science.
+  However, the code for these tools isn't always public.
+  This project shares the code along with the tool, so that people can verify the code and improve it.
+</div>
+<br>
+<br>
+<br>
+<div class="center footer">
+  PowerAnalyses.org version {today}.
+    If you find a bug, please open an issue on <a
+      href="https://github.com/poweranalyses-org/poweranalyses">GitHub</a>.
+    This site was made possible thanks to the
+    <a
+      href="https://www.psychologie.hhu.de/arbeitsgruppen/allgemeine-psychologie-und-arbeitspsychologie/gpower.html">G*Power</a>
+    and
+    <a href="https://github.com/heliosdrm/pwr">pwr</a> projects.
+</div>
diff --git a/app/src/lib/Input.svelte b/app/src/lib/Input.svelte
new file mode 100644
index 0000000..cb577a1
--- /dev/null
+++ b/app/src/lib/Input.svelte
@@ -0,0 +1,26 @@
+<script>
+    let { family, test, analysis, tail, allocRatio, k, p, q, m, rho, epsilon, nPredictors, df } = $props();
+
+    import InputTemplate from './inputs/InputTemplate.svelte';
+    import TTemplate from './inputs/TTemplate.svelte';
+    import FTemplate from './inputs/FTemplate.svelte';
+    import ChiTemplate from './inputs/ChiTemplate.svelte';
+</script>
+
+{#if family === "t"}
+    <InputTemplate>
+        <TTemplate test={test} bind:analysis={analysis} bind:tail={tail} bind:allocRatio={allocRatio} />
+    </InputTemplate>
+
+{:else if family === "f"}
+    <InputTemplate>
+        <FTemplate test={test} bind:analysis={analysis} bind:k={k} bind:p={p} bind:q={q} bind:m={m} bind:rho={rho} bind:epsilon={epsilon} bind:nPredictors={nPredictors} />
+    </InputTemplate>
+
+{:else if family === "chi"}
+    <InputTemplate>
+        <ChiTemplate test={test} bind:analysis={analysis} bind:df={df} />
+    </InputTemplate>
+
+{/if}
+
diff --git a/app/src/lib/Options.svelte b/app/src/lib/Options.svelte
new file mode 100644
index 0000000..25f60a5
--- /dev/null
+++ b/app/src/lib/Options.svelte
@@ -0,0 +1,91 @@
+<script>
+    import Output from './Output.svelte';
+    import Input from './Input.svelte';
+
+    let { getOutput, family, test, analysis, n, alpha, power, es, tail, allocRatio, k, p, q, m, rho, epsilon, nPredictors, df } = $props();
+
+    const options = {
+        t: [
+            { id: null, text: "Correlation: Point biseral model", enabled: false, value: 1 },
+            { id: null, text: "Linear bivariate regression: One group, size of slope", enabled: false, value: 2 },
+            { id: null, text: "Linear bivariate regression: Two groups, difference between intercepts", enabled: false, value: 3 },
+            { id: null, text: "Linear bivariate regression: Two groups, difference between slopes", enabled: false, value: 4 },
+            { id: null, text: "Linear multiple regression: Fixed model, single regression coefficient", enabled: false, value: 5 },
+            { id: "dependentSamplesTTest", text: "Means: Difference between two dependent means (matched pairs)", enabled: false, value: 6 },
+            { id: "independentSamplesTTest", text: "Means: Difference between two independent means (two groups)", enabled: true, value: 7 },
+            { id: "oneSampleTTest", text: "Means: Difference from constant (one sample case)", enabled: true, value: 8 },
+            { id: null, text: "Means: Wilcoxon signed-rank test (matched pairs)", enabled: false, value: 9 },
+            { id: null, text: "Means: Wilcoxon signed-rank test (one sample case)", enabled: false, value: 10 },
+            { id: null, text: "Means: Wilcoxon-Mann-Whitney test (two groups)", enabled: false, value: 11 },
+            { id: null, text: "Generic t test", enabled: false, value: 12 },
+        ],
+        f: [
+            { id: "ANCOVA", text: "ANCOVA: Fixed effects, main effects, and interactions", enabled: true, value: 1 },
+            { id: "oneWayANOVA", text: "ANOVA: Fixed effects, omnibus, one-way", enabled: true, value: 2 },
+            { id: "twoWayANOVA", text: "ANOVA: Fixed effects, special, main effects, and interactions", enabled: true, value: 3 },
+            { id: "betweenRepeatedANOVA", text: "ANOVA: Repeated measures, between factors", enabled: true, value: 4 },
+            { id: "withinRepeatedANOVA", text: "ANOVA: Repeated measures, within factors", enabled: true, value: 5 },
+            { id: "withinBetweenRepeatedANOVA", text: "ANOVA: Repeated measures, within-between interaction", enabled: true, value: 6 },
+            { id: null, text: "Hotellings T²: One group mean vector", enabled: false, value: 7 },
+            { id: null, text: "Hotellings T²: Two group mean vector", enabled: false, value: 8 },
+            { id: null, text: "MANOVA: Global effects", enabled: false, value: 9 },
+            { id: null, text: "MANOVA: Special effects and interactions", enabled: false, value: 10 },
+            { id: null, text: "MANOVA: Repeated measures, between factors", enabled: false, value: 11 },
+            { id: null, text: "MANOVA: Repeated measures, within factors", enabled: false, value: 12 },
+            { id: null, text: "MANOVA: Repeated measures, within-between interaction", enabled: false, value: 13 },
+            { id: "deviationFromZeroMultipleRegression", text: "Linear multiple regression: Fixed model, R² deviation from zero", enabled: true, value: 14 },
+            { id: "increaseMultipleRegression", text: "Linear multiple regression: Fixed model, R² increase", enabled: true, value: 15 },
+        ],
+        chi: [
+            { id: "goodnessOfFitChisqTest", text: "Goodness-of-fit tests: Contingency tables", enabled: true, value: 1 },
+            { id: null, text: "Variance: Difference from constant (one sample case)", enabled: false, value: 2 },
+            { id: null, text: "Generic χ² test", enabled: false, value: 3 },
+        ],
+    };
+
+    // NOTE: Debug purposes only. Comment out when not needed.
+    $inspect(family, test, analysis)
+</script>
+
+<div class="dropdowns border">
+
+    <label for="family">
+        Test family:<br>
+        <select class="drop-down" id="family" bind:value={family} name="type">
+            <option disabled value="exact">Exact</option>
+            <option value="f">F tests</option>
+            <option value="t">t tests</option>
+            <option value="chi">χ² tests</option>
+            <option disabled value="z">z tests</option>
+        </select><br>
+    </label>
+
+    {#key family}
+    <label for="test">
+        Statistical test:<br>
+        <select class="drop-down" id="test" bind:value={test} name="type">
+            {#each options[family] as {id, text, value, enabled} (id ?? text)}
+                <option value={id ?? text} disabled={!enabled}>{text}</option>
+            {/each}
+        </select><br>
+    </label>
+    {/key}
+
+    <label for="analysis">
+        Type of power analysis:<br>
+        <select class="drop-down" id="analysis" bind:value={analysis} name="type">
+            <option value="n">Compute required sample size (a priori)</option>
+            <option value="alpha">Compute required α (criterion)</option>
+            <option value="power">Compute achieved power (post hoc)</option>
+            <option value="es">Compute required effect size (sensitivity)</option>
+        </select>
+    </label>
+
+    <br>
+    <br>
+</div>
+
+<div class="numbers">
+    <Input family={family} test={test} analysis={analysis} bind:tail={tail} bind:allocRatio={allocRatio} bind:k={k} bind:p={p} bind:q={q} bind:m={m} bind:rho={rho} bind:epsilon={epsilon} bind:nPredictors={nPredictors} bind:df={df} />
+    <Output getOutput={getOutput} family={family} test={test} analysis={analysis} bind:n={n} bind:alpha={alpha} bind:power={power} bind:es={es} tail={tail} allocRatio={allocRatio} k={k} p={p} q={q} m={m} rho={rho} epsilon={epsilon} nPredictors={nPredictors} df={df} />
+</div>
diff --git a/app/src/lib/Output.svelte b/app/src/lib/Output.svelte
new file mode 100644
index 0000000..a0cfe79
--- /dev/null
+++ b/app/src/lib/Output.svelte
@@ -0,0 +1,135 @@
+<script>
+    let { getOutput, family, test, analysis, n, alpha, power, es, tail, allocRatio, k, p, q, m, rho, epsilon, nPredictors, df } = $props();
+
+    // Derived states for disabling inputs
+    let nEnabled = $derived.by(() => analysis === 'n');
+    let alphaEnabled = $derived.by(() => analysis === "alpha");
+    let powerEnabled = $derived.by(() => analysis === "power");
+    let esEnabled = $derived.by(() => analysis === "es");
+
+    // Handling error messages
+    let errorMessage = $state("");
+
+    /**
+     * Handles the click event on the calculate button. This function calls `getOutput`
+     * with the current form values, waits for the calculation result, and updates the
+     * appropriate component state based on the type of analysis specified in the result.
+     *
+     * It's an asynchronous function due to potential delays in calculation,
+     * especially when interfacing with WebAssembly or external APIs.
+     *
+     * Upon successfully updating the values, this function triggers an animation
+     * on the element(s) that display the calculation result to visually indicate
+     * the update.
+     *
+     * @async
+     * @returns {Promise<void>} A promise that resolves once the state has been updated with the calculation results.
+     */
+    async function handleCalculate() {
+        const result = await getOutput(test, analysis, n, alpha, power, es, tail, allocRatio, k, p, q, m, rho, epsilon, nPredictors, df);
+        const id = Object.keys(result)[0]; // 'n', 'es', 'power', 'alpha'
+        const value = result[id];
+
+        // Check if the backend returned -111 for error handling
+        if (value == -111) {
+            errorMessage = "Unable to find a solution for given input.";
+            // Optionally, animate the error message div if required
+            animateElements(['error']);
+        }
+        else {
+            errorMessage = "";
+        }
+
+        // Update the corresponding state based on the id
+        if (id === 'n') n = value;
+        else if (id === 'es') es = value;
+        else if (id === 'power') power = value;
+        else if (id === 'alpha') alpha = value;
+
+        // Animate the changed element
+        animateElements([id]);
+    }
+
+    /**
+     * Resets statistical analysis parameters to their default values and applies
+     * an animation to these fields to indicate that they have been reset.
+     * This function is typically used to clear the input fields in the UI and
+     * set them back to a predefined starting point.
+     *
+     * @returns {void}
+     */
+    function handleReset() {
+        n = 50;
+        alpha = 0.05;
+        power = 0.95;
+        es = 0.5;
+
+        // Animate all inputs that have been reset
+        animateElements(['n', 'alpha', 'power', 'es']);
+    }
+
+    /**
+     * Applies an animation effect to a list of elements identified by their DOM IDs. This function
+     * is used to highlight changes in input fields by animating their borders.
+     *
+     * @param {string[]} ids - An array of element IDs to which the animation will be applied.
+     */
+    function animateElements(ids) {
+        const highlightBorder = [
+            { border: '1px solid var(--favicon-red)' }
+        ];
+        const highlightTiming = {
+            duration: 400,
+            iterations: 1,
+        };
+
+        ids.forEach(id => {
+            const element = document.querySelector(`#${id}`);
+            if (element) {
+                element.animate(highlightBorder, highlightTiming);
+            }
+        });
+    }
+
+    // NOTE: Debug purposes only. Comment out when not needed.
+    $inspect(n, alpha, power, es)
+</script>
+
+<div class="output border">
+  <table id="output" class="center">
+    <tbody class="center">
+      <tr>
+        <td>Sample size:</td>
+        <td class="result">
+          <input id="n" type="number" min="2" max="99999" step="5" bind:value={n} disabled={nEnabled}>
+        </td>
+      </tr>
+      <tr>
+        <td>α err prob:</td>
+        <td class="result">
+          <input id="alpha" type="number" min="0.01" max="0.99" step="0.01" bind:value={alpha} disabled={alphaEnabled}>
+        </td>
+      </tr>
+      <tr>
+        <td>Power (1-β err prob):</td>
+        <td class="result">
+          <input id="power" type="number" min="0" max="0.99" step="0.01" bind:value={power} disabled={powerEnabled}>
+        </td>
+      </tr>
+      <tr>
+        <td>Effect size:</td>
+        <td class="result">
+          <input id="es" type="number" min="0" max="100" step="0.05" bind:value={es} disabled={esEnabled}>
+        </td>
+      </tr>
+    </tbody>
+  </table>
+  <div id="error" class="center error">
+        {errorMessage}
+  </div>
+  <div class="center">
+    <button class="resetBtn" onclick={handleReset}>Reset</button>
+    <button class="calculateBtn" on:click={handleCalculate}>Calculate</button>
+  </div>
+</div>
+
diff --git a/app/src/lib/inputs/ChiTemplate.svelte b/app/src/lib/inputs/ChiTemplate.svelte
new file mode 100644
index 0000000..764c4d9
--- /dev/null
+++ b/app/src/lib/inputs/ChiTemplate.svelte
@@ -0,0 +1,16 @@
+<script>
+    let { test, analysis, df } = $props();
+
+    // NOTE: Debug purposes only. Comment out when not needed.
+    $inspect(df)
+</script>
+
+{#if test === "goodnessOfFitChisqTest"}
+    <tr>
+        <td>Df:</td>
+        <td>
+            <input id="df" type="number" min=1 max=1000 step=1 bind:value={df}>
+        </td>
+    </tr>
+{/if}
+
diff --git a/app/src/lib/inputs/FTemplate.svelte b/app/src/lib/inputs/FTemplate.svelte
new file mode 100644
index 0000000..e52c0fb
--- /dev/null
+++ b/app/src/lib/inputs/FTemplate.svelte
@@ -0,0 +1,189 @@
+<script>
+    let { test, analysis, k, p, q, m, rho, epsilon, nPredictors } = $props();
+
+    /**
+     * Sanitizes numerical input values to ensure they meet specific criteria, such as being positive numbers.
+     * This function can be used to preprocess user inputs in form fields that are expected to be positive.
+     *
+     * @param {number} value - The input value to be sanitized.
+     * @param {number} [defaultValue=0] - A default value to return if the input does not meet the criteria. Optional.
+     * @returns {number} - The sanitized input value, ensuring it conforms to the defined criteria (e.g., positive number).
+     */
+    function sanitizeInt(value, defaultValue = 0) {
+        if (value < 0) {
+            console.warn(`Input value ${value} is negative, resetting to ${defaultValue}.`);
+            return defaultValue;
+        }
+        return value;
+    }
+
+    /**
+     * Sanitizes numerical input values to ensure they meet specific criteria, such as being positive numbers.
+     * This function can be used to preprocess user inputs in form fields that are expected to be positive.
+     *
+     * @param {number} value - The input value to be sanitized.
+     * @param {number} [defaultValue=0.5] - A default value to return if the input does not meet the criteria. Optional.
+     * @returns {number} - The sanitized input value, ensuring it conforms to the defined criteria (e.g., positive number).
+     */
+    function sanitizeFloat(value, defaultValue = 0.5) {
+        if (value < 0) {
+            console.warn(`Input value ${value} is negative, resetting to ${defaultValue}.`);
+            return defaultValue;
+        } else if (value > 1) {
+            console.warn(`Input value ${value} is greater than 1, resetting to ${defaultValue}.`);
+            return defaultValue;
+        }
+        return value;
+    }
+
+    $effect(() => {
+        // Sanitize input values
+        k = sanitizeInt(k, 1);
+        p = sanitizeInt(p, 2);
+        q = sanitizeInt(q, 1);
+        m = sanitizeInt(m, 2);
+        rho = sanitizeFloat(rho, 0.5);
+        epsilon = sanitizeFloat(epsilon, 1);
+        nPredictors = sanitizeInt(nPredictors, 1);
+    });
+
+    // NOTE: Debug purposes only. Comment out when not needed.
+    $inspect(k, p, q, m, rho, epsilon, nPredictors)
+</script>
+
+{#if test === "ANCOVA"}
+    <tr>
+        <td>Numerator df:</td>
+        <td>
+            <input id="q" type="number" min=1 max=1000 step=1 bind:value={q}>
+        </td>
+    </tr>
+    <tr>
+        <td>Number of groups:</td>
+        <td><input id="k" type="number" min=1 max=1000 step=1 bind:value={k}>
+        </td>
+    </tr>
+    <tr>
+        <td>Number of covariates:</td>
+        <td><input id="p" type="number" min=2 max=1000 step=1 bind:value={p}>
+        </td>
+    </tr>
+
+{:else if test === "oneWayANOVA"}
+    <tr>
+        <td>Number of groups:</td>
+        <td>
+            <input id="k" type="number" min=1 max=1000 step=1 bind:value={k}>
+        </td>
+    </tr>
+
+{:else if test === "twoWayANOVA"}
+    <tr>
+        <td>Numerator df:</td>
+        <td>
+            <input id="q" type="number" min=1 max=1000 step=1 bind:value={q}>
+        </td>
+    </tr>
+    <tr>
+        <td>Number of groups:</td>
+        <td>
+            <input id="k" type="number" min=1 max=1000 step=1 bind:value={k}>
+        </td>
+    </tr>
+
+{:else if test === "betweenRepeatedANOVA"}
+    <tr>
+        <td>Number of groups:</td>
+        <td>
+            <input id="k" type="number" min=0 max=1000 step=1 bind:value={k}>
+        </td>
+    </tr>
+    <tr>
+        <td>Number of measurement:</td>
+        <td>
+            <input id="m" type="number" min=2 max=1000 step=1 bind:value={m}>
+        </td>
+    </tr>
+    <tr>
+        <td>Corr among rep measures:</td>
+        <td>
+            <input id="rho" type="number" min=0 max=1 step=0.1 bind:value={rho}>
+        </td>
+    </tr>
+
+{:else if test === "withinRepeatedANOVA"}
+    <tr>
+        <td>Number of groups:</td>
+        <td>
+            <input id="k" type="number" min=0 max=1000 step=1 bind:value={k}>
+        </td>
+    </tr>
+    <tr>
+        <td>Number of measurement:</td>
+        <td>
+            <input id="m" type="number" min=2 max=1000 step=1 bind:value={m}>
+        </td>
+    </tr>
+    <tr>
+        <td>Corr among rep measures:</td>
+        <td>
+            <input id="rho" type="number" min=0 max=1 step=0.1 bind:value={rho}>
+        </td>
+    </tr>
+    <tr>
+        <td>Nonsphericity correction ε:</td>
+        <td>
+            <input id="epsilon" type="number" min=0 max=1 step=0.1 bind:value={epsilon}>
+        </td>
+    </tr>
+
+{:else if test === "withinBetweenRepeatedANOVA"}
+    <tr>
+        <td>Number of groups:</td>
+        <td>
+            <input id="k" type="number" min=0 max=1000 step=1 bind:value={k}>
+        </td>
+    </tr>
+    <tr>
+        <td>Number of measurement:</td>
+        <td>
+            <input id="m" type="number" min=2 max=1000 step=1 bind:value={m}>
+        </td>
+    </tr>
+    <tr>
+        <td>Corr among rep measures:</td>
+        <td>
+            <input id="rho" type="number" min=0 max=1 step=0.1 bind:value={rho}>
+        </td>
+    </tr>
+    <tr>
+        <td>Nonsphericity correction ε:</td>
+        <td>
+            <input id="epsilon" type="number" min=0 max=1 step=0.1 bind:value={epsilon}>
+        </td>
+    </tr>
+
+{:else if test === "deviationFromZeroMultipleRegression"}
+    <tr>
+        <td>Number of predictors:</td>
+        <td>
+            <input id="nPredictors" type="number" min=0 max=1000 step=1 bind:value={nPredictors}>
+        </td>
+    </tr>
+
+{:else if test === "increaseMultipleRegression"}
+    <tr>
+        <td>Number of tested predictors:</td>
+        <td>
+            <input id="q" type="number" min=0 max=1000 step=1 bind:value={q}>
+        </td>
+    </tr>
+    <tr>
+        <td>Total number of predictors:</td>
+        <td>
+            <input id="p" type="number" min=0 max=1000 step=1 bind:value={p}>
+        </td>
+    </tr>
+
+{/if}
+
diff --git a/app/src/lib/inputs/InputTemplate.svelte b/app/src/lib/inputs/InputTemplate.svelte
new file mode 100644
index 0000000..6e43591
--- /dev/null
+++ b/app/src/lib/inputs/InputTemplate.svelte
@@ -0,0 +1,5 @@
+<table id="input" class="border">
+  <tbody>
+    <slot />
+  </tbody>
+</table>
diff --git a/app/src/lib/inputs/TTemplate.svelte b/app/src/lib/inputs/TTemplate.svelte
new file mode 100644
index 0000000..9848755
--- /dev/null
+++ b/app/src/lib/inputs/TTemplate.svelte
@@ -0,0 +1,46 @@
+<script>
+    let { test, analysis, tail, allocRatio } = $props();
+
+    // sanitize allocRatio
+    $effect(() => {
+        if (allocRatio < 0.01) {
+            allocRatio = 0.01;
+        } else if (allocRatio > 100) {
+            allocRatio = 100;
+        }
+    })
+
+    // NOTE: Debug purposes only. Comment out when not needed.
+    $inspect(tail, allocRatio)
+</script>
+
+{#if test === "oneSampleTTest"}
+    <tr>
+        <td>Tail(s):</td>
+        <td>
+            <select id="tail" bind:value={tail}>
+                <option value="1">One tail</option>
+                <option value="2">Two tails</option>
+            </select>
+        </td>
+    </tr>
+
+{:else if test === "independentSamplesTTest"}
+    <tr>
+        <td>Tail(s):</td>
+        <td>
+            <select id="tail" bind:value={tail}>
+                <option value="1">One tail</option>
+                <option value="2">Two tails</option>
+            </select>
+        </td>
+    </tr>
+    <tr>
+        <td>Allocation ratio N2/N1</td>
+        <td>
+            <input id="allocRatio" type="number" min=0.01 max=100 step=0.1 bind:value={allocRatio}>
+        </td>
+    </tr>
+
+{/if}
+
diff --git a/app/src/main.js b/app/src/main.js
new file mode 100644
index 0000000..ffd92e7
--- /dev/null
+++ b/app/src/main.js
@@ -0,0 +1,8 @@
+import { mount } from "svelte";
+import App from "./App.svelte";
+
+const app = mount(App, {
+    target: document.getElementById("app"),
+});
+
+export default app;
diff --git a/app/src/vite-env.d.ts b/app/src/vite-env.d.ts
new file mode 100644
index 0000000..4078e74
--- /dev/null
+++ b/app/src/vite-env.d.ts
@@ -0,0 +1,2 @@
+/// <reference types="svelte" />
+/// <reference types="vite/client" />
diff --git a/app/svelte.config.js b/app/svelte.config.js
new file mode 100644
index 0000000..5fc5071
--- /dev/null
+++ b/app/svelte.config.js
@@ -0,0 +1,8 @@
+import { vitePreprocess } from "@sveltejs/vite-plugin-svelte";
+
+export default {
+    preprocess: vitePreprocess(),
+    compilerOptions: {
+        runes: true,
+    },
+};
diff --git a/app/vite.config.js b/app/vite.config.js
new file mode 100644
index 0000000..d701969
--- /dev/null
+++ b/app/vite.config.js
@@ -0,0 +1,7 @@
+import { defineConfig } from 'vite'
+import { svelte } from '@sveltejs/vite-plugin-svelte'
+
+// https://vitejs.dev/config/
+export default defineConfig({
+  plugins: [svelte()],
+})
diff --git a/dist/Cargo.toml b/dist/Cargo.toml
index f536f79..25d0fb8 100644
--- a/dist/Cargo.toml
+++ b/dist/Cargo.toml
@@ -1,7 +1,10 @@
 [package]
 name = "dist"
 version = "0.1.0"
-authors = ["Rik Huijzer <rust@huijzer.xyz>"]
+authors = [
+    "Rik Huijzer <rust@huijzer.xyz>",
+    "Jose Storopoli <jose@storopoli.io>",
+]
 edition = "2021"
 
 [build-dependencies]
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..d72ee57
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,130 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1709126324,
+        "narHash": "sha256-q6EQdSeUZOG26WelxqkmR7kArjgWCdw5sfJVHPH/7j8=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "d465f4819400de7c8d874d50b982301f28a84605",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "flake-utils_2": {
+      "inputs": {
+        "systems": "systems_2"
+      },
+      "locked": {
+        "lastModified": 1705309234,
+        "narHash": "sha256-uNRRNRKmJyCRC/8y1RqBkqWBLM034y4qN7EprSdmgyA=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "1ef2e671c3b0c19053962c07dbda38332dcebf26",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1709101946,
+        "narHash": "sha256-TsySgcWm/GlbYdL3AEva49ceeI2BdPQ7muwfYNr1fwo=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "d53c2037394da6fe98decca417fc8fda64bf2443",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1706487304,
+        "narHash": "sha256-LE8lVX28MV2jWJsidW13D2qrHU/RUUONendL2Q/WlJg=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "90f456026d284c22b3e3497be980b2e47d0b28ac",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs",
+        "rust-overlay": "rust-overlay"
+      }
+    },
+    "rust-overlay": {
+      "inputs": {
+        "flake-utils": "flake-utils_2",
+        "nixpkgs": "nixpkgs_2"
+      },
+      "locked": {
+        "lastModified": 1709086241,
+        "narHash": "sha256-3QHK5zu/5XOa+ghBeKzvt+/BLdEPjw/xDNLcpDfbkmg=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "5d56056fb905ff550ee61b6ebb6674d494f57a9e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
+    "systems_2": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..b9cd042
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,41 @@
+{
+  description = "A basic flake with a shell";
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+  inputs.flake-utils.url = "github:numtide/flake-utils";
+  inputs.rust-overlay.url = "github:oxalica/rust-overlay";
+
+  outputs = { nixpkgs, flake-utils, rust-overlay, ... }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        overlays = [ (import rust-overlay) ];
+        pkgs = import nixpkgs {
+          inherit system overlays;
+        };
+        rust = pkgs.rust-bin.stable.latest.default.override
+          {
+            targets = [ "wasm32-unknown-emscripten" ];
+          };
+      in
+      {
+        devShells.default = pkgs.mkShell {
+          EM_CACHE = "/tmp/emscripten_cache";
+          packages = with pkgs; [
+            bashInteractive
+
+            # rust
+            emscripten
+            rust
+
+            # node
+            nodejs
+
+            # svelte
+            nodePackages.svelte-language-server
+          ];
+          shellHook = ''
+            export CC="${pkgs.emscripten}/bin/emcc"
+          '';
+        };
+      });
+}
+
diff --git a/frontend.js b/frontend.js
deleted file mode 100644
index 673a3ae..0000000
--- a/frontend.js
+++ /dev/null
@@ -1,374 +0,0 @@
-function removeAllSelectOptions(selector) {
-    while (selector.options.length > 0) {
-        selector.remove(0);
-    }
-}
-
-function addSelectOption(selector, text, enabled, value) {
-    let option = new Option(text, value);
-    option.disabled = !enabled;
-    selector.add(option, undefined);
-}
-
-function getElementById(id) {
-    const elem = document.getElementById(id);
-    if (elem == null) {
-        throw new Error("Expected to find element with id: " + id);
-    }
-    return elem;
-}
-
-function readString(id) {
-    const elem = getElementById(id);
-    return elem.value;
-}
-
-// Update the "Statistical test" options based on the "Test family" setting.
-function familyChanged() {
-    const family = readString("family");
-    const testSelector = document.getElementById("test");
-    removeAllSelectOptions(testSelector);
-    if (family == "exact") {
-        addSelectOption(testSelector, "Correlation: Bivariate normal model", true, 1);
-        addSelectOption(testSelector, "Linear multiple regression: Random model", false, 2);
-        addSelectOption(testSelector, "Proportion: Difference from constant (binomial test, one sample case)", false, 3);
-        addSelectOption(testSelector, "Proportions: Inequality, two dependent groups (McNemar)", false, 4);
-        addSelectOption(testSelector, "Proportions: Inequality, two independent groups (Fisher's exact test)", false, 5);
-        addSelectOption(testSelector, "Proportions: Inequality, two independent groups (unconditional)", false, 6);
-        addSelectOption(testSelector, "Proportions: Inequality (offset), two independent groups (unconditional)", false, 7);
-        addSelectOption(testSelector, "Proportions: Sign test (binomial test)", false, 8);
-    } else if (family == "f") {
-        addSelectOption(testSelector, "ANCOVA: Fixed effects, main effects, and interactions", true, 'ANCOVA');
-        addSelectOption(testSelector, "ANOVA: Fixed effects, omnibus, one-way", true, 'oneWayANOVA');
-        addSelectOption(testSelector, "ANOVA: Fixed effects, special, main effects, and interactions", true , 'twoWayANOVA');
-        addSelectOption(testSelector, "ANOVA: Repeated measures, between factors",true, 'betweenRepeatedANOVA');
-        addSelectOption(testSelector, "ANOVA: Repeated measures, within factors", true, 'withinRepeatedANOVA');
-        addSelectOption(testSelector, "ANOVA: Repeated measures, within-between interaction", true, 'withinBetweenRepeatedANOVA');
-        addSelectOption(testSelector, "Hotellings T²: One group mean vector", false, 7);
-        addSelectOption(testSelector, "Hotellings T²: Two group mean vector", false, 8);
-        addSelectOption(testSelector, "MANOVA: Global effects", false, 9);
-        addSelectOption(testSelector, "MANOVA: Special effects and interactions", false, 10);
-        addSelectOption(testSelector, "MANOVA: Repeated measures, between factors", false, 11);
-        addSelectOption(testSelector, "MANOVA: Repeated measures, within factors", false, 12);
-        addSelectOption(testSelector, "MANOVA: Repeated measures, within-between interaction", false, 13);
-        addSelectOption(testSelector, "Linear multiple regression: Fixed model, R² deviation from zero", true, 'deviationFromZeroMultipleRegression');
-        addSelectOption(testSelector, "Linear multiple regression: Fixed model, R² increase", true, 'increaseMultipleRegression');
-        addSelectOption(testSelector, "Variance: Test of equality (two sample case)", false, 16);
-        addSelectOption(testSelector, "Generic F test", false, 17);
-    } else if (family == "t") {
-        addSelectOption(testSelector, "Correlation: Point biseral model", false, 1);
-        addSelectOption(testSelector, "Linear bivariate regression: One group, size of slope", false, 2);
-        addSelectOption(testSelector, "Linear bivariate regression: Two groups, difference between intercepts", false, 3);
-        addSelectOption(testSelector, "Linear bivariate regression: Two groups, difference between slopes", false, 4);
-        addSelectOption(testSelector, "Linear multiple regression: Fixed model, single regression coefficient", false, 5);
-        addSelectOption(testSelector, "Means: Difference between two dependent means (matched pairs)", false, 'dependentSamplesTTest');
-        addSelectOption(testSelector, "Means: Difference between two independent means (two groups)", true, 'independentSamplesTTest');
-        addSelectOption(testSelector, "Means: Difference from constant (one sample case)", true, 'oneSampleTTest');
-        addSelectOption(testSelector, "Means: Wilcoxon signed-rank test (matched pairs)", false, 9);
-        addSelectOption(testSelector, "Means: Wilcoxon signed-rank test (one sample case)", false, 10);
-        addSelectOption(testSelector, "Means: Wilcoxon-Mann-Whitney test (two groups)", false, 11);
-        addSelectOption(testSelector, "Generic t test", false, 12);
-    } else if (family == "chi") {
-        addSelectOption(testSelector, "Goodness-of-fit tests: Contingency tables", true, 1);
-        addSelectOption(testSelector, "Variance: Difference from constant (one sample case)", false, 2);
-        addSelectOption(testSelector, "Generic χ² test", false, 3);
-    } else if (family == "z") {
-        addSelectOption(testSelector, "Correlation: Tetrachoric model", false, 1);
-        addSelectOption(testSelector, "Correlations: Two dependent Pearson r's (common index)", true, 2);
-        addSelectOption(testSelector, "Correlations: Two dependent Pearson r's (no common index)", true, 3);
-        addSelectOption(testSelector, "Correlations: Two independent Pearson r's", true, 4);
-        addSelectOption(testSelector, "Logistic regression", true, 5);
-        addSelectOption(testSelector, "Poisson regression", false, 6);
-        addSelectOption(testSelector, "Proportions: Difference between two independent proportions", false, 7);
-        addSelectOption(testSelector, "Generic z test", false, 8);
-    }
-    updateNumberOutputAreas();
-    return;
-}
-
-function removeAllTableRows(table) {
-    while (table.rows.length > 0) {
-        table.deleteRow(0);
-    }
-}
-
-/** Add an option to a table. */
-function addTableOption(table, description, element) {
-    var row = table.insertRow(table.rows.length);
-    var left = row.insertCell(0);
-    // Using innerHTML over textContent to allow formatting such as italic.
-    left.innerHTML = description.concat(":");
-    var right = row.insertCell(1);
-    right.innerHTML = element;
-    return null;
-}
-
-/** Return an input element for floats with element `id`. */
-function floatInputElement(id, defaultValue, step) {
-    return `<input id="${id}" type="number" value="${defaultValue}" onchange="updateOutput()" min="0" max="999999" step="${step}">`;
-}
-
-function floatOutputElement(id, value) {
-    return `<span id="${id}">${value}</span>`;
-}
-
-function disableOutputElement(id) {
-    const elem = getElementById(id);
-    elem.disabled = true;
-    return null;
-}
-
-function enableOutputElement(id) {
-    const elem = getElementById(id);
-    elem.disabled = false;
-    return null;
-}
-
-function getInputTable() {
-    return document.getElementById("input");
-}
-
-/** Update the input and output area based on the "Type of power analysis" setting. */
-function updateNumberOutputAreas() {
-    const inputTable = getInputTable();
-    removeAllTableRows(inputTable);
-    const family = readString("family");
-    const test = readString("test");
-    if (family == "exact") {
-    } else if (family == "f") {
-        if (test == "deviationFromZeroMultipleRegression") {
-            addTableOption(inputTable, "Number of predictors", "<input onchange='updateOutput()' id='nPredictors' value='2' min='0' max='1000' step='5'>");
-        } else if (test == "increaseMultipleRegression") {
-            addTableOption(inputTable, "Number of tested predictors", "<input onchange='updateOutput()' id='q' value='2' min='0' max='1000' step='1'>");
-            addTableOption(inputTable, "Total number of predictors", "<input onchange='updateOutput()' id='p' value='5' min='0' max='1000' step='1'>");
-        } else if (test == "oneWayANOVA") {
-            addTableOption(inputTable, "Number of groups", "<input onchange='updateOutput()' id='k' value='5' min='1' max='1000' step='1'>");
-        } else if (test == "twoWayANOVA") {
-            addTableOption(inputTable, "Numerator df", "<input onchange='updateOutput()' id='q' value='10' min='1' max='1000' step='1'>");
-            addTableOption(inputTable, "Number of groups", "<input onchange='updateOutput()' id='k' value='5' min='1' max='1000' step='1'>");
-        } else if (test == "ANCOVA") {
-            addTableOption(inputTable, "Numerator df", "<input onchange='updateOutput()' id='q' value='10' min='1' max='1000' step='1'>");
-            addTableOption(inputTable, "Number of groups", "<input onchange='updateOutput()' id='k' value='5' min='1' max='1000' step='1'>");
-            addTableOption(inputTable, "Number of covariates", "<input onchange='updateOutput()' id='p' value='2' min='2' max='1000' step='1'>");
-        } else if (test == "betweenRepeatedANOVA") {
-            addTableOption(inputTable, "Number of groups", "<input onchange='updateOutput()' id='k' value='2' min='0' max='1000' step='1'>");
-            addTableOption(inputTable, "Number of measurement", "<input onchange='updateOutput()' id='m' value='2' min='2' max='1000' step='1'>");
-            addTableOption(inputTable, "Corr among rep measures", "<input onchange='updateOutput()' id='rho' value='0.5' min='0' max='1' step='0.1'>");
-        } else if (test == "withinRepeatedANOVA" || test == "withinBetweenRepeatedANOVA") {
-            addTableOption(inputTable, "Number of groups", "<input onchange='updateOutput()' id='k' value='2' min='0' max='1000' step='1'>");
-            addTableOption(inputTable, "Number of measurement", "<input onchange='updateOutput()' id='m' value='2' min='2' max='1000' step='1'>");
-            addTableOption(inputTable, "Corr among rep measures", "<input onchange='updateOutput()' id='rho' value='0.5' min='0' max='1' step='0.1'>");
-            // FIXME: the lower bound of epsilon corresponds to 1 / (number of measurements - 1)
-            addTableOption(inputTable, "Nonsphericity correction ε", "<input onchange='updateOutput()' id='epsilon' value='1' min='0' max='1' step='0.1'>");
-        }
-    } else if (family == "t") {
-        addTableOption(inputTable, "Tail(s)", "<select onchange='updateOutput()' id='tail'><option value=1>One tail</option><option value=2>Two tails</option></select>");
-    } else if (family == "chi") {
-        addTableOption(inputTable, "Df", "<input onchange='updateOutput()' id='df' value='5' min='1' max=1000' step='1'>");
-    } else if (family == "z") {
-    }
-
-    enableOutputElement("n");
-    enableOutputElement("alpha");
-    enableOutputElement("power");
-    enableOutputElement("es");
-
-    const analysis = readString("analysis");
-    if (analysis == "n") {
-        disableOutputElement("n");
-    } else if (analysis == "alpha") {
-        disableOutputElement("alpha");
-    } else if (analysis == "power") {
-        disableOutputElement("power");
-    } else if (analysis == "es") {
-        disableOutputElement("es");
-    }
-
-    updateOutput();
-
-    return null;
-}
-
-function readFloat(id) {
-    const elem = getElementById(id);
-    return parseFloat(elem.value);
-}
-
-const highlightBorder = [
-    { border: '1px var(--favicon-red) solid' }
-];
-
-const highlightTiming = {
-    duration: 400,
-    iterations: 1,
-}
-
-function setFloat(id, value) {
-    const elem = getElementById(id);
-    elem.animate(highlightBorder, highlightTiming);
-    elem.value = value;
-    return null;
-}
-
-function readInt(id) {
-    const elem = getElementById(id);
-    return parseInt(elem.value);
-}
-
-function tail() {
-    return readInt("tail");
-}
-
-function alpha() {
-    return readFloat("alpha");
-}
-
-function power() {
-    return readFloat("power");
-}
-
-function es() {
-    return readFloat("es");
-}
-
-function n() {
-    return readFloat("n");
-}
-
-function restrictFloat(id) {
-    const elem = getElementById(id);
-    const value = elem.value;
-    if (elem.max < elem.value) {
-        elem.value = elem.max;
-    }
-}
-
-/** Enforce that input numbers are within the HTML specified values. */
-function restrictInput() {
-    restrictFloat("alpha");
-}
-
-function setError(text) {
-    const elem = getElementById("error");
-    elem.innerText = text;
-    return null;
-}
-
-function handleError(value) {
-    if (value == -111 || value == -111.0) {
-        setError("Unable to find a solution for given input.");
-    }
-    return null;
-}
-
-function setOutput(id, out) {
-    handleError(out);
-    setFloat(id, out);
-    return null;
-}
-
-function frontEndState() {
-    const inputTable = getInputTable();
-    const inputElements = inputTable.querySelectorAll("input, select");
-
-    // Ignoring family because the back end will infer it from the test.
-    const analysis = readString("analysis");
-    const test = readString("test");
-
-    const state = {
-        analysis: analysis,
-        test: test,
-        n: n(),
-        alpha: alpha(),
-        power: power(),
-        es: es()
-    };
-
-    for (let i = 0; i < inputElements.length; i++) {
-        const elem = inputElements[i];
-        state[elem.id] = elem.value;
-    }
-
-    return state;
-}
-
-function writeToPtr(ptr, text) {
-    const buffer = Module.HEAPU8.buffer;
-    const view = new Uint8Array(buffer, ptr, 1024);
-    const encoder = new TextEncoder();
-    const with_stop = text + "<END>";
-    view.set(encoder.encode(with_stop));
-}
-
-function readFromPtr(ptr) {
-    const buffer = Module.HEAPU8.buffer;
-    const view = new Uint8Array(buffer, ptr, 1024);
-    const length = view.findIndex(byte => byte === 0);
-    const decoder = new TextDecoder();
-
-    return decoder.decode(new Uint8Array(buffer, ptr, length));
-}
-
-/** Update the output area by calculating the numbers via WebAssembly. */
-function updateOutput() {
-    setError("");
-    restrictInput();
-
-    const family = readString("family");
-    const analysis = readString("analysis");
-    const test = readString("test");
-
-    const state = frontEndState();
-    const json = JSON.stringify(state);
-    console.log(`Sending the following json to the back end: ${json}`);
-
-    const ptr = Module._alloc();
-    writeToPtr(ptr, json);
-    Module._calculatePower(ptr);
-    const returned = readFromPtr(ptr);
-    Module._dealloc(ptr);
-    console.log(`Received the following json from the back end: ${returned}`);
-    const result = JSON.parse(returned);
-    const id = Object.keys(result)[0];
-    setOutput(id, result[id]);
-
-    return null;
-}
-
-/** Reset the numbers in the output area. */
-function resetOutput() {
-    setFloat("n", 50);
-    setFloat("alpha", 0.05);
-    setFloat("power", 0.95);
-    setFloat("es", 0.5);
-    updateOutput();
-}
-
-function webAssemblySupport() {
-    try {
-        if (typeof WebAssembly === "object" && typeof WebAssembly.instantiate === "function") {
-            const module = new WebAssembly.Module(Uint8Array.of(0x0, 0x61, 0x73, 0x6d, 0x01, 0x00, 0x00, 0x00));
-            if (module instanceof WebAssembly.Module) {
-                return new WebAssembly.Instance(module) instanceof WebAssembly.Instance;
-            }
-        }
-    } catch (e) {
-    }
-    return false;
-}
-
-if (!webAssemblySupport()) {
-    document.body.innerHTML = `
-        <br>
-        <center>
-        This site only works with WebAssembly. Enable WebAssembly in your browser to continue.
-        </center>
-        `;
-} else {
-    Module['onRuntimeInitialized'] = function() {
-        console.log("Loading of the poweranalyses.wasm library succeeded.");
-        familyChanged();
-        updateNumberOutputAreas();
-        updateOutput();
-    }
-}
diff --git a/index.html b/index.html
deleted file mode 100644
index 2b828de..0000000
--- a/index.html
+++ /dev/null
@@ -1,129 +0,0 @@
-<!DOCTYPE html>
-<html lang="en">
-
-<head>
-  <title>PowerAnalyses.org</title>
-  <link rel="stylesheet" href="/style.css">
-  <link rel="icon" href="/favicon.png">
-  <script src="pa.js"></script>
-  <script defer src="frontend.js"></script>
-  <meta charset="utf-8">
-  <meta name="viewport" content="width=device-width">
-</head>
-
-<body>
-  <div class="content">
-    <div class="title center">
-      <img class="favicon" src="/favicon.png" />
-      PowerAnalyses.org Beta
-    </div>
-    <img class="plot center" src=""></img>
-
-    <div class="dropdowns border">
-      <label for="family">
-        Test family:<br>
-        <select class="drop-down" id="family" onchange="familyChanged()" name="type">
-          <option disabled value="exact">Exact</option>
-          <option value="f">F tests</option>
-          <option value="t">t tests</option>
-          <option value="chi">χ² tests</option>
-          <option disabled value="z">z tests</option>
-        </select><br>
-      </label>
-      <label for="test">
-        Statistical test:<br>
-        <select class="drop-down" id="test" onchange="updateNumberOutputAreas()" name="type">
-          <option value="1">ANCOVA - Fixed effects, main effects, and interactions</option>
-        </select><br>
-      </label>
-      <label for="analysis">
-        Type of power analysis:<br>
-        <select class="drop-down" id="analysis" onchange="updateNumberOutputAreas()" name="type">
-          <option value="n">Compute required sample size (a priori)</option>
-          <option value="alpha">Compute required α (criterion)</option>
-          <option value="power">Compute achieved power (post hoc)</option>
-          <option value="es">Compute required effect size (sensitivity)</option>
-        </select>
-      </label>
-      <br>
-      <br>
-    </div>
-    <div class="numbers">
-      <div>
-        <table id="input" class="border">
-          <tr>
-            <td>Tail:</td>
-            <td>
-              <select id="tail">
-                <option value="1">One tail</option>
-                <option value="2">Two tails</option>
-              </select>
-            </td>
-          </tr>
-        </table>
-        <div class="output border">
-          <table id="output" class="center">
-            <tbody class="center">
-              <tr>
-                <td>Sample size:</td>
-                <td class="result">
-                  <input id="n" type="number" value="100" min="2" max="99999" step="5" onchange="updateOutput()"
-                    disabled>
-                </td>
-              </tr>
-              <tr>
-                <td>α err prob:</td>
-                <td class="result">
-                  <input id="alpha" type="number" value="0.05" min="0.01" max="0.99" step="0.01"
-                    onchange="updateOutput()">
-                </td>
-              </tr>
-              <tr>
-                <td>Power (1-β err prob):</td>
-                <td class="result">
-                  <input id="power" type="number" value="0.95" min="0" max="0.99" step="0.01" onchange="updateOutput()">
-                </td>
-              </tr>
-              <tr>
-                <td>Effect size:</td>
-                <td class="result">
-                  <input id="es" type="number" value="0.5" min="0" max="100" step="0.05" onchange="updateOutput()">
-                </td>
-              </tr>
-            </tbody>
-          </table>
-          <div id="error" class="center error">
-          </div>
-          <div class="center">
-            <button onclick="resetOutput()" class="resetBtn">Reset</button>
-            <button onclick="updateOutput()" class="calculateBtn">Calculate</button>
-          </div>
-        </div>
-      </div>
-    </div>
-    <br>
-    <br>
-    <br>
-    <div style="font-size: 1rem">
-      <center><b>Why this web site?</b></center><br>
-      Statistical power analyses play a key role in science.
-      However, the code for these tools isn't always public.
-      This project shares the code along with the tool, so that people can verify the code and improve it.
-    </div>
-    <br>
-    <br>
-    <br>
-    <div class="center footer">
-      PowerAnalyses.org version <VERSION>.
-        If you find a bug, please open an issue on <a
-          href="https://github.com/poweranalyses-org/poweranalyses">GitHub</a>.
-        This site was made possible thanks to the
-        <a
-          href="https://www.psychologie.hhu.de/arbeitsgruppen/allgemeine-psychologie-und-arbeitspsychologie/gpower.html">G*Power</a>
-        and
-        <a href="https://github.com/heliosdrm/pwr">pwr</a> projects.
-    </div>
-  </div>
-</body>
-
-</html>
\ No newline at end of file
diff --git a/justfile b/justfile
new file mode 100644
index 0000000..a7eba8e
--- /dev/null
+++ b/justfile
@@ -0,0 +1,23 @@
+default: build serve
+
+alias s := serve
+alias b := build
+
+serve:
+  @echo "Serving..."
+  @cd app && npm run dev -- --open
+
+build:
+  @echo "Building..."
+  @cargo build --target wasm32-unknown-emscripten --release
+  @cp --verbose target/wasm32-unknown-emscripten/release/pa.wasm app/public/pa.wasm
+  @cp --verbose target/wasm32-unknown-emscripten/release/pa.js app/public/pa.js
+
+test:
+  @echo "Testing..."
+  @cargo test
+
+deploy:
+  @echo "Deploying..."
+  @cd app && npm run build
+
diff --git a/power/Cargo.toml b/power/Cargo.toml
index e3cb0ca..76eee9a 100644
--- a/power/Cargo.toml
+++ b/power/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "pa"
 version = "0.1.0"
-authors = ["Rik Huijzer <rust@huijzer.xyz>"]
+authors = ["Rik Huijzer <rust@huijzer.xyz>", "Jose Storopoli <jose@storopoli.io>"]
 edition = "2021"
 
 [dependencies]
diff --git a/power/src/power.rs b/power/src/power.rs
index 7521bd5..be3eaa9 100644
--- a/power/src/power.rs
+++ b/power/src/power.rs
@@ -29,7 +29,7 @@ pub enum TestKind {
     /// Multiple regression: increase of R^2.
     IncreaseMultipleRegression {
         /// Total number of predictors (#A + #B).
-        rho: i64,
+        p: i64,
         /// Number of tested predictors (#B).
         q: i64,
     },
@@ -151,9 +151,9 @@ impl TestKind {
                 Ok(TestKind::DeviationFromZeroMultipleRegression { n_predictors })
             }
             "increaseMultipleRegression" => {
-                let rho = parse_i64(data, "rho").unwrap();
+                let p = parse_i64(data, "p").unwrap();
                 let q = parse_i64(data, "q").unwrap();
-                Ok(TestKind::IncreaseMultipleRegression { rho, q })
+                Ok(TestKind::IncreaseMultipleRegression { p, q })
             }
             "ANCOVA" => {
                 let k = parse_i64(data, "k").unwrap();
@@ -225,9 +225,9 @@ impl TestKind {
             TestKind::GoodnessOfFitChisqTest { df } => {
                 Box::new(NoncentralChisq::new(*df as f64, es.powi(2) * n))
             }
-            TestKind::IncreaseMultipleRegression { rho, q } => Box::new(NoncentralF::new(
+            TestKind::IncreaseMultipleRegression { p, q } => Box::new(NoncentralF::new(
                 *q as f64,
-                n - (*rho as f64) - 1.0,
+                n - (*p as f64) - 1.0,
                 es.powi(2) * n,
             )),
             TestKind::ANCOVA { k, q, p } => Box::new(NoncentralF::new(
diff --git a/power/src/tests.rs b/power/src/tests.rs
index c1e8c66..aac25a1 100644
--- a/power/src/tests.rs
+++ b/power/src/tests.rs
@@ -116,17 +116,17 @@ fn deviation_from_zero_multiple_regression() {
 
 #[test]
 fn increase_multiple_regression() {
-    let rho = "5";
+    let p = "5";
     let q = "2";
     let f_squared = ES.sqrt();
     let join = with_rest("increaseMultipleRegression");
-    let extra = json!({"rho": rho, "q": q, "es": f_squared, "analysis": "alpha"});
+    let extra = json!({"p": p, "q": q, "es": f_squared, "analysis": "alpha"});
     test_interface(&join(&extra), 0.006);
-    let extra = json!({"rho": rho, "q": q, "es": f_squared, "analysis": "power"});
+    let extra = json!({"p": p, "q": q, "es": f_squared, "analysis": "power"});
     test_interface(&join(&extra), 0.994);
-    let extra = json!({"rho": rho, "q": q, "es": f_squared, "analysis": "es"});
+    let extra = json!({"p": p, "q": q, "es": f_squared, "analysis": "es"});
     test_interface(&join(&extra), 0.575); // take the sqrt of G*Power.
-    let extra = json!({"rho": rho, "q": q, "es": f_squared, "analysis": "n"});
+    let extra = json!({"p": p, "q": q, "es": f_squared, "analysis": "n"});
     test_interface(&join(&extra), 35.0);
 }
 
diff --git a/script/README.md b/script/README.md
deleted file mode 100644
index c72b9bd..0000000
--- a/script/README.md
+++ /dev/null
@@ -1,23 +0,0 @@
-# `script/`
-
-This folder contains some helper scripts that are useful during development.
-
-- `build.sh`: Compile the Rust code to WebAssembly and copy the result to the public directory.
-- `entr-build.sh`: Build the project when a file changes.
-- `entr-frontend.sh`: Move the front end files when a file changes.
-- `public.sh`: Copy the files to the public directory.
-- `serve.sh`: Serve the website locally with live reload.
-
-For running the tests when a file changes, use `cargo watch`:
-
-```sh
-$ cargo install cargo-watch
-
-$ cargo watch -x test
-```
-
-To then run only one test called `some_test`, use:
-
-```sh
-$ cargo watch -x 'test some_test'
-```
diff --git a/script/build.sh b/script/build.sh
deleted file mode 100755
index fae7f8e..0000000
--- a/script/build.sh
+++ /dev/null
@@ -1,24 +0,0 @@
-#!/usr/bin/env bash
-
-#
-# Compile the Rust code to WebAssembly and copy the result to the public directory.
-#
-
-set -e
-
-BASEDIR=$(dirname $(dirname $(readlink -f "$0")))
-cd "$BASEDIR"
-
-# The || true prevents the script from failing if the grep returns no results.
-EMSCRIPTEN_GREP="$(rustup target list --installed | { grep wasm32-unknown-emscripten || true; })"
-if [[ "$EMSCRIPTEN_GREP" == "" ]]; then
-    echo "Expected the wasm32-unknown-emscripten target to be installed."
-    echo "Run 'rustup target add wasm32-unknown-emscripten' to fix this error."
-    echo ""
-    echo "You might also need to install the emscripten compiler (emcc) via your package manager."
-    echo "For Nix, set the EM_CACHE environment variable to something like ~/.cache/emscripten."
-fi
-
-cargo build --target wasm32-unknown-emscripten --release
-
-./script/public.sh
diff --git a/script/entr-build.sh b/script/entr-build.sh
deleted file mode 100755
index c9d3bc9..0000000
--- a/script/entr-build.sh
+++ /dev/null
@@ -1,12 +0,0 @@
-#!/usr/bin/env bash
-
-#
-# Build the project when a file changes.
-#
-
-set -e
-
-BASEDIR=$(dirname $(dirname $(readlink -f "$0")))
-cd "$BASEDIR"
-
-find dist power | entr -s ./script/build.sh
diff --git a/script/entr-frontend.sh b/script/entr-frontend.sh
deleted file mode 100755
index 0e621ae..0000000
--- a/script/entr-frontend.sh
+++ /dev/null
@@ -1,11 +0,0 @@
-#!/usr/bin/env bash
-
-#
-# Move the front end files when a file changes.
-#
-
-set -e
-
-BASEDIR=$(dirname $(dirname $(readlink -f "$0")))
-
-find index.html style.css frontend.js | entr -s "bash $BASEDIR/script/public.sh"
diff --git a/script/public.sh b/script/public.sh
deleted file mode 100755
index c974606..0000000
--- a/script/public.sh
+++ /dev/null
@@ -1,41 +0,0 @@
-#!/usr/bin/env bash
-
-#
-# Copy the files to the public directory.
-#
-
-set -e
-
-BASEDIR=$(dirname $(dirname $(readlink -f "$0")))
-cd "$BASEDIR"
-
-mkdir -p public
-if [ -f public/index.html ]; then
-    chmod 666 public/index.html
-fi
-if [ -f public/style.css ]; then
-    chmod 666 public/style.css
-fi
-if [ -f public/frontend.js ]; then
-    chmod 666 public/frontend.js
-fi
-if [ -f public/pa.js ]; then
-    chmod 666 public/pa.js
-fi
-if [ -f public/pa.wasm ]; then
-    chmod 666 public/pa.wasm
-fi
-
-cp --verbose index.html public
-cp --verbose style.css public
-cp --verbose favicon.png public
-cp --verbose frontend.js public
-cp --verbose target/wasm32-unknown-emscripten/release/pa.js public
-cp --verbose target/wasm32-unknown-emscripten/release/pa.wasm public
-
-# To avoid accidentally editing the files in public manually.
-chmod 444 public/index.html
-chmod 444 public/style.css
-chmod 444 public/frontend.js
-chmod 444 public/pa.js
-chmod 444 public/pa.wasm
diff --git a/script/serve.sh b/script/serve.sh
deleted file mode 100755
index 6b9f514..0000000
--- a/script/serve.sh
+++ /dev/null
@@ -1,16 +0,0 @@
-#!/usr/bin/env bash
-
-#
-# Serve the website locally with live reload.
-#
-
-set -e
-
-BASEDIR=$(dirname $(dirname $(readlink -f "$0")))
-
-cd "$BASEDIR/public"
-
-# Using https://github.com/tapio/live-server because it loads fast and supports live reload.
-# Install with npm install -g live-server.
-# Or via Nix, install nodePackages_latest.live-server.
-live-server --no-browser