How it works
- Load a PGN or set a position.
- Use the board and local controls.
- Save or export the result without uploading data.
Your PGN, FEN, comments, repertoire and engine lines stay on this device.
Important limitations
Stockfish is a powerful analytical tool, but its result depends on depth, time, engine build and device performance. Move labels are guidance rather than an official judgement.
FAQ
Are games uploaded?
No. The app parses and analyzes them locally.
Does it work offline?
After the application and engine have been cached by the PWA, the main functions can work offline.