Chess Premium+ vs Chess Acuity

Chess Premium+ is a modern, powerful, and completely free chess app designed for players of every skill level. Whether you're learning the basics, sharpening your tactics, or challenging one of the world's strongest chess engines, Chess Premium+ provides everything you need in one elegant experience. Powered by Stockfish 18, the app delivers fast, accurate, and reliable chess analysis while maintaining smooth performance and responsive gameplay. Play complete chess games, solve tactical puzzles, create custom positions, and improve your decision-making with advanced AI—all without subscriptions or advertisements. FEATURES • Play Against Stockfish 18 Challenge one of the world's strongest chess engines with adjustable AI strength suitable for beginners through advanced players. • Daily Chess Puzzles Improve tactical vision, calculation, pattern recognition, and checkmating skills with new chess challenges. • Advanced Game Analysis Review completed games, discover mistakes, analyze critical positions, and learn stronger continuations using Stockfish 18. • Position Editor Create any custom chess position, test opening ideas, practice endgames, or explore tactical scenarios with full engine support. • Multiple AI Opponents Play against balanced, aggressive, defensive, and positional AI personalities for a varied training experience. • Achievement System Unlock trophies, complete milestones, and track your progress as you improve your chess skills. • Optimized Performance Enjoy fast engine calculations, smooth animations, responsive controls, and a stable chess experience designed for long playing sessions. WHY CHESS PREMIUM+ • 100% Free • No Advertisements • No Subscription Required • Offline Gameplay • Stockfish 18 Engine • Daily Chess Puzzles • Position Editor • Game Analysis • Modern Premium Interface • Optimized Performance Whether you want to play chess, solve puzzles, analyze games, study openings, practice endgames, or simply improve your skills, Chess Premium+ provides a complete chess experience in one beautifully designed application. Download Chess Premium+ today and start mastering chess for free.

Chess Acuity turns any chess position into insight — entirely on your device. Set up a position and Stockfish 17, running locally on your iPhone, shows you the best moves and lines. No account, no ads, no analytics, no internet connection required. The app is free and open source. FOUR WAYS IN • From a photo — share a screenshot from any chess app or website, or pick one from your photo library. A built-in recognizer reads the board on-device and sets up the position. • From a game — paste a PGN, step through the moves, and analyse any position along the way. • By hand — set up the board in a clean, fast editor. • By FEN — paste a position directly. ANALYSIS • Powered by the Stockfish 17 chess engine, running natively on your device. • Multiple lines (MultiPV) with evaluations, searched by depth or thinking time. • Step through any line move by move on the board. • Plain-language explanation of the engine's choice. PLAY • Play a full game against Stockfish at eight strength levels. • Take a hint when you're stuck, then hand the finished game straight to the analyser. PRIVATE BY DESIGN Everything — board recognition, engine analysis, move explanations — runs on your device. The app makes no network requests and collects no data. Screenshots you import are processed locally and never uploaded. OPEN SOURCE Chess Acuity is free software under the GNU GPLv3. The complete source code is available at github.com/alexostar/chess-acuity-app. FAIR PLAY Chess Acuity is made for study and review. Please don't use it for assistance during live or rated games — that breaks the fair-play rules of every chess site and spoils the game for everyone.