A free app for Android, by Simple Design Ltd..
Bubble Level – Level Tool is an application that will help you with the level of an object. It is a tool that is used to check whether a surface is horizontal or vertical.
It is very easy to use and is a great tool to have in your toolbox.
This application is used for many purposes, such as:
Hanging objects such as a picture or a frame onto a wall or a tree branch.
Assembling shelves, tables, and cabinets.
Leveling carpentry and construction projects.
Taking photos or videos of objects.
It is a very handy application that can be used in many different ways.