The game itself is fun, but the app is handicapped in several ways
First of all, unless mine is buggy, advertisements will pop up, up to once every 3 seconds. Basically, each time a piece is placed or moved, an ad might pop up, which is very annoying
Second, sometimes the computer will refuse to move if it knows it will lose. The only course of action is to quit the app and start over
Third, this is more of a complaint of the game itself, but most of the game is placing the pieces. Once you have 3 in a row you can remove an opposing piece. The problem is if the player is unable to move a piece in the way of the opposing team, they can simply repeat the same movement back and forth to keep getting three in a row, which makes the game a bit annoying at times.
It would be better if once a 3 in a row was achieved, that set was no longer allowed and the player had to find a new combo with different pieces