The controls in this game were absolutely terrible. After playing a good app like Nonograms Katana, an app with great controls and is 100% free, this was like learning an entirely different game. The biggest flaws are that you should not be forced to double click in order to drag squares, and should not be forced to double click to make X squares. I even went into the settings and changed the controls... Wow. It just got worse. I would not recommend this app to anyone who likes nonograms.