Ive tried many iOS variants for a Go AI(solo play). There appears to be no network play. I was first confused on the first game as the AI didnt play by itself. Then after that the AI adjusted to play automatically. Other apps are either way too weak, or way too long(joygo9x9 takes 30seconds/move). There other app that was good was fixed 20x20 and joy go. Its fine, but the gam is too big and takes to long. Could be five stars, but this app makes you earn your way to play on a 11x11 board, and 13x13.
So if you want a good game AI for beginners, this is worth the $3
Itotzke about SmartGo Player, v2.3