iPhone · iPad · Mac
Chess Notation Fluency
Practice the language of chess.
Build confidence reading and writing standard algebraic notation (SAN) with short practice sessions drawn from real games. Practice on iPhone, iPad, or Mac.
Learn in both directions
Watch a move and write its notation, or read the notation and make the move on the board. Mixed practice combines both. Choose White or Black, type your answers or use multiple choice, and start in the opening, middlegame, or endgame when the game supports it.
Practice a few rounds or play through a full game. Review your progress, first-try results, and mistake patterns as you learn.
Two games to start. Thousands to explore.
The free app includes two starter games with all practice modes. A one-time Full Game Library purchase unlocks the complete 5,000-game catalog and personal PGN import. There is no subscription.
Choose a game from the Library to practice it directly, or let the app choose a game that fits your settings.
Practice wherever you are
The bundled catalog is available offline. Practice history and imported games sync through your private iCloud storage when available, with local storage when iCloud is unavailable. Purchases and synchronization require a connection.
No separate app account. No advertising or tracking.
For iOS 26, iPadOS 26, and macOS 26 or later.
Developed by Mark Harris.