> The Bluetooth connection is lost when the iPhone is locked or switches to another app. It automatically re-connects when the app is opened again, but this can take anywhere from 1 to 5 seconds. This is a major disappointment and renders the Bluetooth functionality almost unusable for me!
I've had the same happen with the A10. I had to go back into the phone bluetooth menu and reestablish a connection. The app came back to life. But I've also had it appear as the recording wasn't happening (the timer was at zero), even though it showed levels. Checked the recorder and sure enough it was recording. After restarting the app -- or waiting a bit, I can't recall -- it did show the correct time.
Just a warning to those who rely on the app.