OfflineGo

Play Go against a powerful AI — entirely offline. No internet, no accounts, no subscriptions. Just you and the board.

Offline Go runs KataGo, one of the world's strongest Go engines, directly on your device using Apple's Neural Engine. Every move is computed locally with a full neural network (b20c256), giving you a serious opponent that works anywhere — on a plane, in the subway, or off the grid.

7 difficulty levels to match any skill level:

Mochi — Very forgiving, perfect for learning the basics Tanuki — Casual play with room to breathe Kitsune — Balanced, moderate-strength opponent Fukuro — Strong play with few mistakes Tora — Very strong, minimal errors Ryuu — Expert-level pure neural network play Kami — Master-level with Monte Carlo Tree Search Features:

Fully offline — no internet connection required, ever Powered by KataGo neural networks via CoreML Real-time move probability visualization Win rate graph tracks your position throughout the game Territory scoring with Japanese rules Move history with full game replay Game history to review past matches Undo support Multiple animated background themes Runs on iPhone and iPad, and now Apple Watch! Privacy first. No data collection, no analytics, no tracking. Everything stays on your device.