Seems to have a bug
The game seems really interesting. I did the demo then bought the full game, which seemed very cool. However, there appears to be a major flaw. I was playing with one other player and every time he would tap a yellow diamond to put it in the board, it would disconnect me from the app. Since I was hosting, we would then have to start over with the scanning and the tutorial, etc. We tried three times and then had to give up. Very frustrating!!