I figured out a way to calibrate it! Take a piece of foam larger than your phone/tablet. (I used 1"""""""""""""""" Styrofoam insulation) Float the foam in a bowl or your sink full of water. Place your phone on top of the foam and wait until it stops moving.......press calibrate. It should be fairly accurate at that point. I have a Samsung S2x with a battery that bulges out at the back and it was the only way I could figure out how to get level with it. Simple but useful app. Thanks. Edit- Decided to buy the """"""""""""""""Pro Version"""""""""""""""" Worth the $2 (Canadian :-) )""
April 25 2016