Privacy

Last updated: 27 April 2026

What we store

If you sign in: your email address (so we recognise you next time) and your puzzle history — which puzzles you played, your guesses, your streak. That's it.

If you don't sign in: nothing leaves your browser. Your puzzle history is kept in your browser's localStorage on this device only.

What we don't store

• No passwords (we use magic links).
• No payment information.
• No third-party advertising or behavioural tracking.

Infrastructure

Chartle runs on Vercel (hosting) and Supabase (database and authentication). Both providers process data on our behalf.