ChessImprover vs AI Chess

ChessImprover is a complete chess training app: play with a coach by your side, solve puzzles, build an opening repertoire, and master the endgames — powered by a strong engine that runs entirely on your device. PLAY WITH A COACH — NEW Relaxed, untimed games with a coach commenting on every move you make — in plain words, not chess notation. The coach speaks its advice out loud (you can turn the voice off), names the openings you play, and when something goes wrong it offers to take the move back and try again, with a hint if you're stuck. PLAY AT YOUR LEVEL Challenge the built-in engine anywhere from 500 to 2900 Elo. Climb the ladder of 25 rated bots, or play relaxed unrated games with no clock. Stuck? Ask for a hint. REVIEW EVERY GAME Every move explained in plain English — what worked, what didn't, and what your opponent's move set up. Inaccuracies, mistakes and blunders are flagged move by move, the summary shows the turning point and what to train next, and you can watch the whole game back as a narrated replay. See exactly where you left your opening prep, and explore alternatives on the analysis board. SOLVE 23,000 PUZZLES Tactics from real games, matched to your level. Rated mode tracks your own puzzle rating, timed mode races the clock in 3, 5, and 10-minute rushes, and custom mode lets you pick a difficulty and solve at your own pace. BUILD A REAL OPENING REPERTOIRE Answer a few questions and the wizard assembles an opening repertoire for White or Black — real lines with clear explanations, from simple beginner systems to a full club repertoire. Then drill your lines with spaced repetition so they stick. MASTER THE ENDGAMES THAT DECIDE GAMES Curated drills for the endgames every player must know: queen and rook checkmates, king-and-pawn opposition, and the Lucena and Philidor rook endings. Win the winning ones, hold the draws. LEARN FROM ZERO New to chess? A built-in guide teaches the rules from the very first move. Private by design: no account, no sign-up. Everything — the engine, the puzzles, even the coach's voice — runs offline on your device. Questions or feedback? chessimproverapp@gmail.com

Play chess against a real chess engine — one built from scratch, running entirely on your iPhone. No account. No internet required. No ads. AI Chess is powered by Andromida, our own engine written from the ground up in Swift. It isn't a wrapper around someone else's engine: the search, the evaluation, and the opening book are all ours, tuned through hundreds of measured self-play matches. A REAL ENGINE, NOT A TOY • Alpha-beta search with quiescence, transposition tables, null-move pruning, late move pruning, and reverse futility pruning — the same family of techniques the strongest engines use, implemented and measured one at a time. • Andromida starts from a 72-position opening book and quietly learns which lines work against you, favouring them over time. • Twenty strength levels and five play styles, from Passive to Aggressive — a fair fight whether you're learning the pieces or you're rated. • Two engine flavours, classic and bitboard, if you like to tinker. YOUR OWN CHESS COACH Turn on Coach Mode and every move you play is rated the moment you make it — Best, Good, Inaccuracy, Mistake, or Blunder. • On-board arrows show the move you should have played, and the reply your opponent was threatening. • Plain-English reasons: "Hangs your Knight." "Missed a forced checkmate." • Heads-up prompts before pivotal moves, so you get the chance to spot the tactic yourself. • Spoken coaching in four voices — pick the coach whose pace and tone suit you. • Every mistake is remembered. The Practice screen groups your recurring patterns and drops you back into the exact position to try again. PLAY HOW YOU LIKE • Play White, play Black, pass-and-play with a friend, or move both sides yourself in Analysis mode. • Time controls from 1+0 Bullet to 30+20 Classical — plus Custom and Unlimited for when you'd rather think than race. • Hints and live analysis, with evaluation and best-line arrows on the board. • Set up any position with the built-in editor. • Save, load, and e-mail your games as PGN. • Board themes, coordinates, figurine notation, legal-move dots, take-back and step-forward. OPTIONAL AI OPPONENTS Would you rather play a large language model LLMs? Bring your own API key (BYOK) and face Claude, GPT, Grok, Gemini and other providers — or download an on-device model and play a neural opponent with no internet at all. Your key is kept in your device's Keychain and used only to talk to the provider you picked. PRIVACY BY DEFAULT No account. No sign-up. No analytics, no tracking, no data collection. Your games, your settings, and your AI Provider API keys stay on your device. FREE AND PRO The on-device AI opponent is free to play, indefinitely. An optional AI Chess Pro subscription unlocks the Andromida engines, Hint, Analysis, and Coach Mode. Every plan starts with a 14-day free trial — cancel any time before it ends and you won't be charged. Subscriptions ; users still pay their AI provider directly for model usage. This apps is offering following auto-renewable subscriptions. 1. AIChess- Pro - Yearly Subscription - Title of auto-renewing subscription : Yearly - Length of subscription - Yearly auto renewal subscription - Price of subscription - $99.99 USD / Year - App privacy policy - https://aidigiapps.com/aichess/privacy.html and - Terms of Use (EULA) - https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ 2. AIChess- Pro - Monthly Subscription - Title of auto-renewing subscription : Monthly - Length of subscription - Monthly auto renewal subscription - Price of subscription - $9.99 USD / month - App privacy policy - https://aidigiapps.com/aichess/privacy.html and - Terms of Use (EULA) - https://www.apple.com/legal/internet-services/itunes/dev/stdeula/