I found the culprit to be the landscape mode. Freeze every time, never fail. Last review: I hate to throw it out here. But after several messages sent from their website to the devs with no response, I am posting this in hope that the problem be fixed so I can use this app on my iPad Air 2 with iOS 9.3.1. Every time (Yes every time) I open Photo Candy, load a photo from my album, tap the check icon with or without choosing one of the ratios, the app would freeze, or crash. And no matter what I do, it would stay frozen. I have tried closing the app, and reinstalling the app. Nothing works. It works on my iPhone.