Mobile Maia Play chess offline against Maia, a model trained to choose moves like human players. Pick a Maia rating from 600 to 2600, then review your game with Maia and Stockfish to explore what you could have played. Mobile Maia is free and open source. Play and analysis run on your phone, with no account, ads, subscriptions or daily analysis limits. No Internet connection is needed after installation. Play at your own pace Choose your side and play with a clock or without a time limit. Adjust Maia's move variety and optional human-like pauses. Take back moves, play rematches and return to saved unfinished games. Understand your games Compare the moves Maia thinks people would play with Stockfish's suggestions. You can compare two Maia ratings side by side. Review a whole game with an evaluation graph, accuracy scores and move annotations. Explore positions and variations, then continue playing from a position you choose. Keep your chess on your phone Open PGN games or FEN positions, and save or share PGN files with comments and variations. Browse recent games and look up opening names offline. Choose from ten interface languages. Experimental Chessnut support Chessnut Air and Go boards can connect over Bluetooth for untimed games from the standard starting position, with lights showing Maia's moves. Other Chessnut models have not been confirmed. Timed board games, USB and Analysis Board input are not supported. Before you download The download is several hundred megabytes because Maia's model is included for offline use. Maia's rating setting guides the human moves it predicts; it is not a guaranteed playing strength. Mobile Maia is an independent community project, licensed under AGPL-3.0-only. It uses Maia-3 from the University of Toronto Computational Social Science Lab and Stockfish, with a chess interface informed by Lichess. It is not an official Maia Chess, Lichess, Stockfish or Chessnut app.