What data is stored and why.

Daily streaks, solved counts, attempts, and similar practice stats are stored in your browser local storage. Clearing browser data can remove that local progress.

Local progress is used to show your own stats and does not need an account.

Supporter codes are checked to decide whether archive features should unlock. The site may store a browser cookie after a successful unlock so you do not have to re-enter the code every visit.

Codes should be treated as access tokens, not passwords. Do not share them publicly.

The app includes Vercel Analytics for basic traffic measurement. Server logs may also record technical request data needed to operate and debug the service.

Do not put personal information into puzzle titles, summaries, tags, notes, or reports unless you are comfortable with that information being visible to people who can access that puzzle.