Go is ancient strategy game with simple rules. Hactar go is perfect for learning go, and to study go anywhere you are.
Best way to learn go is thru game of capture-go. Hactar can play capture-go with you.
Hactar Lite can play capture-go with you. Hactar Lite also lets you try go at beginner level in 9x9 board.
It is possible to search games in device for position or players.
Hactar contains over 410 go problems (tsumego). You can also add your own collections easily, or download additional 400 problem with few clicks.