About
Ruler is a user-friendly and accurate ruler app for your phone. It allows you to calibrate the ruler using a coin or a credit card when you don't have a physical ruler with you. The app offers various unit options such as fractional inches, decimal inches, centimeters, and millimeters. You can also manually set the ruler to a known length for accurate measurements. The app features a night mode to save battery and provide a comfortable reading experience. It allows you to save your measurements for future use and does not require any permissions. The recent updates include new features like millimeters scale, credit card calibration, fractional display of measurements, and an Android Material theme.
