Sticky
I got this several years ago. On both iPad 2 and iPhone 4S it was "sticky" I could tilt the device several degrees with no change in reading. Support was not able to help. Then I got a different app that worked great.
I just got a new iPhone 6S and tried both apps again. This one is still sticky, the other one is fine!
Twiga65 about
iHandy Level, v1.70.2