Not exactly covert
I have an iPad 2, IOS version 6.1.3. When the app starts recording, it lights the screen up. It displays a white screen with a wide black bar in the middle. Hard to be stealthy if its gonna light up like a Christmas tree when listening... Other than that it seems to work just fine.
LisaJane1361 about
Pocket Spy Cam: Video Camera with Sound and Motion Sensor Activated Recording