Chess Best Move: Screenshot

Chess Best Move turns a picture of a chess position into the best move, and does the whole analysis on your device. It is a study tool: review a game you have finished, work through a puzzle, or examine a position you set up yourself. HOW IT WORKS 1. Take a screenshot of the position you want to look at. 2. Open Chess Best Move and tap "Use latest screenshot". You can also pick the picture from Photos, paste it, or drag it in. 3. The app finds the board in the picture, reads all 64 squares, and works out which way the board faces and whose turn it is. 4. Anything it is unsure about is marked, and you can correct any square before the analysis starts. You can also set the side to move, flip the board, or build a position by hand. 5. Choose how long the engine may think: 1, 3, 5, 10 or 30 seconds, and tap Analyze. 6. The best move is drawn as an arrow over your own board picture, with the move in standard algebraic notation, the evaluation and the engine's main line. ON YOUR DEVICE The recognition model and the Stockfish 19 chess engine are both built into the app and run on your iPhone or iPad. Your picture is never uploaded, nothing is sent to a server, and the app needs no network connection and no account. Nothing is tracked and there is no advertising. Running the same position again at a longer think time costs nothing. IN THE APP - A position editor with a full piece palette, for fixing a misread square or setting a position up by hand. - The evaluation as a bar beside the board and as a number in pawns, or as the distance to mate. - The engine's main line in standard algebraic notation, with the search depth it reached. - A "Find Best Move" shortcut you can assign to the Action button or to Back Tap. - Full VoiceOver, Dynamic Type, Increase Contrast and Reduce Motion support. - Light and dark appearance. FAIR PLAY Please respect fair-play rules: most chess sites do not allow engine help in games you are playing. ANALYSES AND PRICES Chess Best Move is free and unlimited, with nothing to buy, for everyone who installs it before October 15, 2026. That is permanent: it stays unlimited for your Apple Account, on every device you sign in to. Install it on or after October 15, 2026 and the first three analyses are free. After that, the purchase screen offers three ways to keep going: - Pro Weekly, 5.99 US dollars per week: unlimited analyses. - Pro Yearly, 39.99 US dollars per year: unlimited analyses. - Pro Lifetime, 59.99 US dollars once: unlimited analyses, not a subscription. If you close the purchase screen after running out, the app may also offer 15 Analyses, a one-time purchase of 2.99 US dollars for fifteen analyses that never expire. Pro Weekly and Pro Yearly are auto-renewable subscriptions to Chess Best Move Pro, which gives unlimited analyses for as long as it is active. Pro Weekly costs 5.99 US dollars for each one-week period. Pro Yearly costs 39.99 US dollars for each one-year period. Payment is charged to your Apple Account when you confirm the purchase. A subscription renews automatically at the same price for the same period, unless you cancel it at least 24 hours before the current period ends. Manage or cancel a subscription in Settings > Apple Account > Subscriptions. Pro Lifetime and the 15-analysis pack are one-time purchases and never renew. The prices above are the United States prices; every other region follows Apple's own price conversion. Terms of use: https://ciscoriordan.github.io/chessbestmove.app/terms.html Privacy policy: https://ciscoriordan.github.io/chessbestmove.app/privacy.html OPEN SOURCE Chess Best Move is free software under the GNU General Public License version 3. Source code: https://ciscoriordan.github.io/chessbestmove.app/source.html It contains a modified version of Stockfish 19, also free software under that license. Settings lists that modification and the license of every other component. REQUIREMENTS iOS 26 or later, on iPhone and iPad.