Privacy

Privacy and data boundaries

Core review runs locally. This page explains what stays in your browser and what still uses external services.

Short version

Analysis, training, and statistics are stored locally in your browser. Public-game imports and anonymous analytics still involve third-party services.

What ChessIQ does not collect

No game uploads

Games are analyzed locally, not uploaded as a cloud archive.

No credentials

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

No ad-tech tracking

No ad targeting or data sale pipeline.

No personal information

No names, emails, or profile identity fields are required.

No behavioral profiling

No personal profile is built for advertising.

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/interaction metrics help us improve the product. No personal identifiers are used.

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.