Measure by Leminno.

Turn your phone into three practical measuring tools. Use a screen ruler in metric or imperial units, calibrate it against a standard bank card when needed, drag the protractor from 0° to 180°, and use the bubble level to check X/Y tilt and set a custom zero.

The measurement tools work offline. Preferences, ruler calibration, and level zero stay on your device. There are no ads, accounts, analytics, trackers, or cloud sync. Optional one-time supporter purchases are available through Google Play Billing and are not required to use the tools.