Privacy

Privacy and data boundaries

Core review history, saved positions, and statistics stay in your browser. Public-game imports and anonymous analytics still involve limited third-party services.

What ChessIQ does not collect

No credentials

We never ask for passwords. Imports use public usernames only.

No ad-tech tracking

No ad targeting or data sale pipeline.

No ChessIQ account profile

No ChessIQ account, name, email, or password is required. Public usernames may be used for imports.

What stays on your device

Analysis cache

Parsed games, engine evals, and accuracy summaries stay in browser storage.

Profiles & preferences

Usernames, presets, and study settings are stored locally.

Cached assets

App assets and Stockfish can be cached after first load for faster/offline use.

You control it

Clear browser storage any time to remove ChessIQ data.

Third-party services

Chess.com & Lichess APIs

Username imports call Chess.com or Lichess public APIs. Your public username is shared for that request.

Vercel Analytics

Anonymous, aggregated page and interaction metrics help us improve the product. ChessIQ analytics events avoid usernames, PGNs, FENs, and move text.

Vercel Speed Insights

Anonymous performance metrics (load times, web vitals) help us keep the site fast.

Rate limiting

IP may be held briefly in server memory for abuse/rate-limit protection and is not used for profiling.

Questions about privacy?

Reach out for clarification or help with local data removal.