Crashes A LOT on iPhone 4 – Video Reverse: rewind videos Review

I like this app, but it keeps crashing when it's reversing the video. It doesn't do this on my iPad, so idk what's wrong. Can you fix this? I would like to keep it on my phone, but if the problem doesn't get fixed, I'll delete it. I don't want an app that doesn't work to take up space. Please fix this problem!! I don't want to sound threatening, but these crashes drive me crazy!
Review by Dogville1467? on Video Reverse: rewind videos.