ChessImprover

ChessImprover helps you actually get better at chess — not just play it. Build an opening repertoire, play full games against a strong on-device engine, review your games move by move, and sharpen your tactics with thousands of puzzles. Everything runs offline on your phone. No account, no ads.

PLAY THE ENGINE
• Full games against a native chess engine with neural-network evaluation.
• Adjustable strength from beginner to expert, so games stay competitive as you improve.
• Optionally have the engine stick to your opening repertoire.

OPENING REPERTOIRES
• Build separate White and Black repertoires, organized in folders.
• Position-based storage handles transpositions automatically.
• Get started fast with bundled "Build Openings" sets for beginner and club-level players.
• Import and export your lines.

REVIEW YOUR GAMES
• Automatic move-by-move analysis flags inaccuracies, mistakes, and blunders.
• See where you left your opening repertoire.
• Step through the analysis board to explore alternatives.

TACTICS PUZZLES
• Thousands of puzzles drawn from real games, organized by rating and theme.
• Pick your difficulty and train the patterns that matter.

BUILT FOR FOCUS
• Works fully offline — engine, openings, and puzzles are all on-device.
• No account or sign-in required.
• No ads.
• Board themes and piece sets, with accessibility support.

Whether you're learning your first openings or grinding toward the next rating milestone, ChessImprover gives you a complete training toolkit in your pocket.