Deklinationstrainer

A daily-practice German declension trainer. Self-hosted so your progress actually saves.

Deploy to Coolify

One-time setup

1. Push these files to a git repo (GitHub / Gitea / whatever Coolify is connected to).

2. In Coolify, create a new Application:

   • Source: your git repo
   • Build pack: Nixpacks (auto-detects Vite) or Static
   • Build command: npm run build
   • Publish directory: dist
   • Port: not needed for static output (Coolify serves it directly)

3. Add a domain (e.g. deklination.yourdomain.com). Coolify provisions HTTPS via Caddy/Traefik automatically.

4. Deploy. Visit the URL on any device.

Local dev

npm install
npm run dev    # http://localhost:5173
npm run build  # outputs to ./dist

On iPhone

Open the URL in Safari, tap Share → Add to Home Screen. It opens fullscreen like a native app, and progress saves in localStorage across reboots, sessions, and app closes.

Storage

The app tries window.storage first (Claude artifact environment), then falls back to localStorage. When self-hosted, only localStorage runs, which iOS Safari persists reliably.

To wipe progress: open browser devtools → Application → Local Storage → delete the gd-v10 key. Or on iPhone: Settings → Safari → Advanced → Website Data → search your domain → delete.