Paid for the app. It was great at first but quickly became very frustrating. I wish I hadn't paid for it. I still get ads, and I cannot click out of them at all. They're not quick, either. Even more frustrating is the fact that for the last few days almost every game I play is now unsolvable. (it seems to be about 80% of the time) I don't even want to play anymore. I understand that there are bound to be SOME games without solutions, but not this many. I'm looking for a better app now.