For a short time, it worked w/out incident. Over the last few days it has begun to freeze up & crash, or will not allow a piece to move to the selected squares. In a few separate game plays, non-captured pieces would disappear, then reappear a move or two later & in the opposite color or on different squares. I have since deleted this app. However, I am going to reinstall it to see of this fixes the issue.
Update: Reinstalled twice w/out much success in game play. Was able to play a few matches at skill levels 1 thru 3, but after the sixth or so move, the app would freeze up and crash. I was able to back out and reenter the same match to move a piece or to find the computers piece had moved, only to have it crash again. Bugs should be addressed. Though the paid version is only $0.99, I doubt I would make the purchase. If the developers are unwilling to fix the issues on the free version, and based on a few of the reviews of the paid version (it appears the same problem exists), then why should I even consider making the purchase?
6JDC5 about iChess (Free)