Every game
makes you better.

Play an opponent that adapts to you — then get real coaching on every mistake. Chess AI is the coach in your pocket.

Download on the App Store Free to play · iPhone
Game review: eval graph, accuracies, and key moments
Play

An opponent that always gives you a chance

Stockfish-powered, but never crushing. Auto mode tracks your rating and recent games, promotes you when you're winning, and eases off when you're not — the sweet spot where improvement happens.

  • Bullet, blitz, rapid, classical & custom time controls
  • Ten strength levels, or let Auto find yours
  • Glicko-2 ratings, streaks, and full game history
Home screen: time control tiles and ratings
Game Review

See exactly where the game turned

After every game, Chess AI walks you through your key moments — what you played, what was better, and why, in plain language. Powered by advanced AI that writes like a coach, not an engine log.

  • Win-chance graph and accuracy for both sides
  • Coach's notes on every mistake
  • Replay any moment against the engine until you get it right
Analysis screen with win-probability graph
Learn

Puzzles and lessons that match your weaknesses

Eleven puzzle themes — mates, forks, pins, skewers, hanging pieces, endgames and more — mirror the same taxonomy your coach uses, so "you keep missing forks" comes with a fix. New to chess? Sixteen guided lessons take you from how the rook moves to your first checkmate.

  • 1,369 curated puzzles across eleven themes
  • Interactive lessons on a real board
  • All free, forever
Learn tab: puzzle categories and lessons

Your next game is a lesson.

Get Chess AI for iPhone