Chess & Checkers Assistant

Study chess and checkers with real-time analysis on your own board. Chess & Checkers Assistant reads the game on screen, shows the best move with an arrow, grades your moves and explains your mistakes, powered by the Stockfish 19 chess engine running on your phone.

♟ REAL-TIME CHESS ANALYSIS
• Best-move arrow drawn right on the board
• Evaluation bar and mate detection
• Adjustable depth from 1 to 18, with its Elo and time per move
• Top 3 moves: the three best moves as numbered arrows
• Works with the Chess.com and Lichess apps, and with games against the computer
• Beta: the Chess (Jeroen Carolus), Chess for All, Chess Prince, GamoVation and AI Factory apps; some are read from screenshots (Android 11 or later)

📊 LEARN FROM EVERY MOVE
Each of your moves is graded as you play: Brilliant, Great, Best, Excellent, Good, Book, Inaccuracy, Mistake, Blunder, Missed. See your accuracy in the game, the opening's name, where you went wrong and why.

🎓 TEACHER MODE (BETA)
A coach instead of arrows: it warns you about threats, names the opening, explains your mistakes and suggests plans, so you learn to find the moves yourself. The play style you pick guides the teacher, with its own plans and ideas.
• Just hints (free)
• Game assistance and Teaching (Premium)

⛀ CHECKERS (DRAUGHTS)
Move suggestions for Lukok Checkers and, in Beta, Checkers (OWS), Quick Checkers, Checkers Elite and Dimcoms Checkers, read from screenshots (Android 11 or later). Brazilian/International, American, Russian, Spanish, Turkish, Italian, Czech and Thai rules, with automatic detection, and 10 levels. The teacher points out shots, loose pieces and the majority rule.

🎯 PLAY STYLES
Chess: Default, Aggressive, Defensive, Trader, Human, Crazy and Trapper, each inspired by masters who played that way. Checkers: Normal, Aggressive, Defensive, Trapper and Human. Each one shows a different way to play the same position. Premium can show up to 3 chess styles at once, one colored arrow each.

⭐ FREE AND PREMIUM
Free: 500 moves a day in chess and 500 in checkers, depth up to 6, move grading, evaluation, Just hints, checkers.
Premium: unlimited moves, depth up to 18, the opponent's best move, Top 3 moves, all teacher levels, every play style, every checkers level, Auto Play and Endgame Boost. Monthly or yearly subscription; cancel anytime in Google Play.
New installs get 3 days of Premium free (up to 1,000 moves a day), with nothing to pay or cancel.

⚙️ HOW IT WORKS
The app uses Android's Accessibility Service to read the pieces and moves of the supported game apps only, rebuild the position and show suggestions over the game. Apps that draw the board as a picture are read from screenshots taken only while the game is on screen; they stay on your phone and are discarded after reading. It never reads passwords, messages or other apps. Available in 13 languages.

🔒 PRIVACY
The analysis runs on your phone. The app sends anonymous usage statistics, and only if you agree, reports that help fix board reading. No account, no ads, and your data is never sold. Privacy policy: https://chess-stockfish-assistant.github.io/privacy/

Chess & Checkers Assistant is not affiliated with Chess.com, Lichess, Lukok or the other game apps named here. Stockfish is free software (GPL v3); its license and source are listed in the app.