An AI chess coach that runs on your phone.
Play Stockfish without a connection, get a move-by-move review of every game, and train on the mistakes you actually make. Your games stay on your device.
Get it on Google PlayComing to Google Play in December 2026.
Eight levels, clocks, undo, a board editor and pass-and-play for two people on one phone. No network needed.
Each game gets a move-by-move review, graded by Stockfish from blunder to brilliant.
The positions you got wrong come back as drills, together with 10,000 Lichess puzzles, spaced so you see each one again just before you would forget it.
Bring in your games from Lichess or a PGN file and review them the same way.
No cost, no account
One-time purchase in Google Play
No ads. No subscription. No account needed.