OneSolve Gomoku

Play gomoku against an opponent that can calculate forcing lines.

Ten opponent levels, from beginner to advanced. Choose freestyle or renju rules; forbidden moves for Black are marked on the board. The engine runs on your iPhone, with no app account required, and works offline.

Games are saved automatically. Replay move by move, resume from any position, and import or export SGF and coordinate game records. Play a friend locally over the same Wi-Fi network or hotspot.

Pro learning tools include AI Coach, mistake analysis, daily puzzles and a puzzle bank, plus opening lessons. AI Coach recognizes a gomoku board in another app through screen broadcasting and gives advice through speech and picture-in-picture. Recognition and search run on the device; screen frames are not saved or uploaded.

Try Pro free for 3 days from your first use of a Pro feature. A one-time purchase then unlocks Pro for life. No subscription and no automatic charge when the trial ends. Previous AI Coach purchasers keep access to Pro. Games, ladder challenges, basic game records and local network play remain free.

Adaptive board and sidebar layouts support iPhone Duo folding, unfolding and rotation while keeping your current position. No game records or screen content are uploaded.