Good app but recording hardly working

I would really like to give this app a 4 or 5 stars because I thought accent training in iPhone is a great idea. However, a lot of times when I tried to record, the recording function didnt do anything (when I pressed the button, it doesnt record) and occasionally crash the app. I use iPhone4 with iOS5. Please fix this issue.

Md2911 about American Accent Training, v1.2