2023-08-23 00:00:00 A bubble level, spirit level or simply a spirit is an instrument designed to indicate whether a surface is horizontal (level) or vertical (plumb). Bubble Level app is handy, accurate, simple to use and incredibly useful tool for your Android device. Pocket Bubble Level - perfect app for every handyman, DIY and smartphone holder. Accurate, nice and easy to use, at the same time very functional. Install this app and you will have a spirit level always handy.