AI Chess for iOS
Play chess against AI,
on your device.
AI Chess pairs Andromida — our from-scratch chess engine — with modern AI. Play Andromida on-device with no internet and no key, or bring your own API key to face cloud models like Claude, GPT, Grok and Gemini. Save your games, set up any position, and review with hints and analysis.
What it does
A real chess app with AI opponents — not just a chat box.
Andromida engine
Our from-scratch engine — alpha-beta search, a transposition table and an opening book, in a classic and a faster bitboard flavor — adjustable strength, fully offline.
On-device AI
An on-device Gemma model plays without any network, key or per-move cost. Download it once and play anywhere.
Cloud AI, your key
Face Claude, GPT, Grok, Gemini and more using your own provider API key. The app talks to the provider directly — switch anytime.
Hints & analysis
Ask for a hint, turn on analysis arrows, and review a game move by move with the scrubber.
Save, load & e-mail
Export any game as standard PGN, load a PGN back onto the board to replay it, or attach it to a new e-mail.
Edit any position
Set up a custom board from piece palettes — side to move, castling and en-passant — then play or analyze from there.
Private by design
Your games and keys stay on your device.
Keys in the Keychain
Your API keys are stored in the iOS Keychain and sent only to the provider you chose — never to us.
Play fully offline
The Andromida engine and the on-device model run entirely on your device — nothing leaves it.
No trackers
No advertising SDKs, no third-party analytics, no cross-app tracking. Read the privacy policy.
Meet Andromida
Our own from-scratch chess engine — beyond calculation, beyond limits.
Andromida powers AI Chess with alpha-beta search, a transposition table and an opening book — in a classic and a faster bitboard flavor, with adjustable strength. It runs entirely on your device, no key or internet required.
Simple pricing
The on-device AI is free forever. A Pro subscription unlocks the Andromida engine and cloud AI, and every plan starts with a 14-day free trial — no charge until it ends, cancel anytime.
Free
Play the on-device AI — no account, no key, no limits.
Pro · Monthly
The full Andromida engine and cloud AI, billed monthly. 14-day free trial.
Pro · Yearly
Everything in Pro at the best value, billed yearly. 14-day free trial.
Prices are shown in the App Store in your local currency. Cloud AI additionally uses your own provider API key, billed by that provider. Manage or cancel anytime in your Apple subscription settings.