OpenMate

Learn chess openings, or play chess against a strong, fast engine with built-in coaching and analysis tools. OpenMate runs entirely on your device. No internet connection, no accounts, and no data collection. Everything is local, private, and instant. Designed for both play and improvement, OpenMate combines engine strength with visual guidance and practical coaching to help you understand the game as you play.

Features:

• Strong, fast engine with instant responses: ~4M nodes per second on an iPhone 16 (half on Low Power Mode), ~2800 ELO at 3s/move! • Fully offline: no network access required • Hint mode with visual coaching:

• Opening guidance with move suggestions and lists (multicolor arrows)
• Engine-recommended moves (green arrows)
• Threat visualization (red arrows) • Built-in opening knowledge to guide early play • Strategy tips with both chess terminology and plain-English explanations • Play as White or Black • Flip the board anytime • Undo moves freely at any point • No clock: play at your own pace without time pressure

OpenMate is designed to remove friction and distractions. There are no ads, no sign-ups, and no interruptions. Just chess.

Whether you want to practice openings, analyze positions, or simply play strong games offline, OpenMate gives you a focused and responsive experience.

Built for iPhone and iPad, tested across devices, and optimized for smooth performance.