After the most recent upgrade, February 20th 2014 or so, this app is broken for me. It will open to the splash screen and appear frozen, but if I reselect it from the iPads screen where you close apps, it will go on to the pattern page, but then freeze again. Eventually it will appear as if it had crashed, but it simply bounces back to the iPad home screen without actually crashing. No way to access my data. I am very sad, because it was working better after the previous update, and I had increased my star rating. If it gets fixed, I will update again, and hopefully be able to restore my more favorable rating. As it is right now, if your installation isnt broken, dont update!