I tend to remember things best by writing them down. While paper helps me memorize, it’s hard to carry everywhere, and I needed a "pocket notebook" that could also help me actively exercise my memory.

Existing apps like Duolingo often don't match the specific level or vocabulary I encounter at school or in daily life. That’s why I built Ordsamling — a minimalist language notebook designed to rescue my Danish, English, and (since I'm Italian) Italian vocabulary from being forgotten.

With the help of some AI agents to polish the engineering, I built this as a Vite JS web app hosted on Cloudflare Pages. It uses Workers KV for persistent storage and Cloudflare Workers AI to keep the practice quizzes challenging and relevant.

🚀 Check out the live demo: https://ordsamling.pages.dev/?demo

• Personal Trilingual Notebook: A mobile-friendly space to capture Danish, English, and Italian vocabulary from school or daily life.

• Deep Danish Grammar: Go beyond translation with dedicated tracking for noun genders (en/et), verb tenses, and adjective inflections.

• Smart AI Quizzes: Exercise your memory with practice modes featuring AI-generated "smart distractors" and timers to build real-world conversation speed.

• Progress Insights: Automatically track your history to identify "Weakest Words," ensuring you focus your study time where it’s needed most.

# Install dependencies
pnpm install
# Run the frontend only
pnpm dev

This starts the app in Vite mode. If the backend API is not available, the app will fall back to browser localStorage and still work for basic entry management.

Build once and then start the local Pages preview:

pnpm run build
pnpm run dev:pages

This runs the app in the same style as a Cloudflare Pages deployment, including the Workers-backed storage layer.

This project is designed for Node.js 22. Use nvm use in the repository root to switch to the correct version.

The app uses Cloudflare Pages and Workers KV. The frontend code lives in src/, and the backend request handlers are in functions/.

1. Create your KV namespaces in Cloudflare.
2. Add the namespace IDs to wrangler.toml.
3. Generate binding types:

pnpm run cf-typegen

pnpm run build
npx --yes wrangler@4 pages deploy dist --project-name <your-pages-project> --branch main

After deployment, the site should be available on your Cloudflare Pages domain, for example https://ordsamling.pages.dev.

• functions/ contains the Cloudflare Pages Functions that handle storing entries.
• src/ contains the React user interface and the browser fallback behavior.
• During plain Vite development, the app can still store entries locally in the browser.

If data does not appear in KV, verify that the IDs in wrangler.toml are correct and inspect the KV content with Wrangler.

Example command:

npx --yes wrangler@4 kv key list --binding LEXICON --preview --remote

To reset preview KV content:

npx --yes wrangler@4 kv key put entries:v1 "[]" --binding LEXICON --preview --remote

Build the app first, then deploy the generated dist output to Cloudflare Pages. This keeps the deployment process simple and predictable.