On lower levels it is really weak. I managed to beat it on 4k with no handicap, my Kgs rating in 12-10k. Plus if you increase the time it came think, it does not seem to play better.
I also bought the 7d version on Steam for my PC and both are very much well worth the money. I learn more by playing a stronger opponent. Now I have one in my pocket.
The AI is pretty strong. I am European 5d; it is a little weaker than me on its top setting at 19x19.
Very strong AI that will challenge even the strongest of Go players
AI is VERY STRONG. It's about 3 stones stronger than Champion Go, its previous version. But it does crash sometime. Can't analyze games in rating mode even after game is over. CS best move point in analyze mode should be highlighted because it's difficult to locate by coordinates. Missing star is for the high price tag.
It is my friend
The classic card game Solitaire (Klondike/Patience) with lots of play options!
'Kifu Snap' enables you to score and analyze positions simply by taking a photo.