OpenMate vs Mouseslip

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.

Mouseslip is free, full-strength chess analysis that runs entirely on your iPhone — no subscription, no account required. Powered by a native Stockfish engine, Mouseslip reviews your games move by move: an evaluation bar, an accuracy score for each side, and a clear label for every move from Brilliant to Blunder — so you finally understand what went wrong, and what went right. ANALYZE YOUR GAMES • Import games by username from Chess.com or Lichess • Full Game Review: eval graph, per-move classifications, and accuracy • Step through any line with live engine evaluation and best moves SOLVE PUZZLES • Hundreds of thousands of tactics puzzles, filterable by rating and theme • Download puzzle packs to solve completely offline — no connection needed • Track your puzzle rating as you improve PLAY TRAINING BOTS • Dozens of bots rated 400 to 2800 — pick your level • Play as White, Black, or random, with takeback and an optional eval bar • Analyze any game you just played with one tap BUILT FOR LEARNING • Optional AI coach — bring your own OpenAI or Claude key for plain-English move explanations • Piece-ID notation to make moves easier to read • Light and dark themes No login needed to analyze, solve, or play. Download a puzzle pack once and Mouseslip works fully offline.