Acc Leveler (spirit level and bubble level)

Simple and straightforward app for leveling with your phone or tablet. This leveler is based solely on the accelerometer data of your phone. The data is handled statistically in order to provide more reliable reading with an uncertainty estimate for the leveling and the provided angle. The indicated accuracy shows how reliable the accelerometer data is at any given time. If there is a lot of movement the accuracy will naturally be worse and the value will increase. For a very steady surface the uncertainty (or accuracy) is related to the accuracy of the accelerometer sensor. The angle and its accuracy are provided in units of degrees.

For example, values "Angle: 10.00, Accuracy: 0.05" would indicate an angle of 10.00 +/- 0.05 degrees, which means that the angle is accurate to 0.05 degrees.

Currently the app is missing calibration, and it also does not handle angles larger than roughly 25 degrees, since it will move to another axis.