Spirit Level - bubble level tool

This application is professional spirit level tool or just bubble level with nice bubble physics. It is a simple but extremely useful tool in your pocket to check whether a surface is level or not.
Its app`s range from entertained purposes such as checking pool billiard tables in the bar to serious usages like constructions, carpenter, etc. This app stands out from the other similar tools by its nice design, high accuracy and many other functionality.
After correct calibration you can go ahead and use this app tool instead a real spirit level.. To calibrate the levels, hold the phone against a reference surface.