I have a brand new iPhone 5s and iAudition is sometimes sort of OK in a pinch. But as another reviewer wrote "In edit mode, it moves to landscape view but the popup menu stays in portrait, so you cant reat the options save and exit, exit without saving, etc." And it is very frustrating to navigate the editing process that way. It also messes with the rest of the phone when you try to get out of the app. It seems to freeze my phone in landscape mode for a moment before it goes back to portrait view. I feel that this app shouldve been free or at the very least cheeper until they worked out the kinks and made it more stable and user friendly.