A Bubble Level, spirit level or simply a level is an instrument designed to indicate whether a surface is horizontal or vertical Bubble Level app is a useful tool for your Android device. Your device should already be calibrated by the manufacturer. In case you believe it is wrongly calibrated you can re-calibrate your device by pressing calibrate button.
My Mobile Tools Dev is the creator of the app that can be found in the Tools category. The most recent release was on Mar 5, 2017 and Bubble Level was downloaded and set up by over 10K users. According to the latest info, this application is rated 4.7 on Google Play.