A free app for Android, by CoCoNiKa.
All-in-one Toolbox: Smart Tools is an Android toolbox app that contains more than 50 utility tools, smart carpenter, and metering useful tools like bubble level, PDF converter, ruler, distance meter, unit converter, video compressor, pedometer,zip/unzip file, Currency Converter, Image Recovery, Media trimmer, battery saver, bar and QR code reader. Use your phone's in-built sensors to detect and measure angles, distances, and quantities. You can use the app to measure the angle of a surface with respect to gravity, for example, whether a table is flat or whether it is perpendicular to the floor. The app can also detect motion and movement. It can be used to detect whether your phone is moving or not. If it is moving, the app can be used to detect the speed of the motion.
The app is free to download.
