While this app has potential, it has several fatal flaws that make it nearly unusable, and allow you to run the risk of ruining (or losing) your recording. To begin with, the record/stop interface is broken - it easily allows you to record over the same track with NO WARNING. I lost an entire recording session because the wrong button was accidentally hit. I wrote to the author, but there was no replay. Secondly, there is no way to permanently disable the metronome, and if you accidentally leave it on, it embeds it into your tracks, again, ruining your recording. Finally, there is no manual to explain how the non-intuitive interface works.
The basic recording functions, when they work, are ok, but there are too many risky features to warrant continued use. I will look elsewhere for another recording app that doesnt allow me to accidentally ruin or lose my recordings. This app is not ready for professional sale yet. I hope that the author (or Apple) takes it off the market until it is ready.