The greatest apps for measuring anything with just your phone are these ones.
Thanks to recent apps that integrate augmented reality with on-screen calibration, you can now use your phone as a digital ruler. They are perfect for measuring furniture and quickly calculating lengths when you don't have a real ruler on hand. T These apps have changed and adapted to the newest Android and iOS mobile devices, even though the tools that were initially created to accomplish this have been around for more than ten years.
. Now you can accurately measure angles or areas using just your phone's screen and a host of smart sensors. We'll show you how, which apps are great, and how to get the most out of them.
Apps like AR Plan 3D use your phone's camera and sensors to calculate distance, angle, or perimeter on real-world surfaces. Under ideal conditions, they can provide up to 97% accuracy.
- AR Plan 3D from Grymala
By combining augmented reality with on-screen tools (ruler, tape measure, plumb line, or angle gauge), this app is ideal for more technical or planning projects. You can measure areas, perimeters, and heights of objects and even save measurements to categorized projects. It also works with photos to calculate distances without having to move.
- NixGame Ruler
A lightweight and efficient app available as of July 2025. It allows you to measure in centimeters, millimeters, or inches, offers manual calibration, and has useful modes such as point, line, level, and plane. It also measures angles thanks to the built-in digital protractor. Users praise its ease of use and accuracy for making quick measurements on Android.
- Ruler
Designed for small, preliminary calibration measurements using a coin or ruler, this app is visually clear and simple. It allows you to change units and measure horizontally or vertically. The vast majority of reviews highlight its usefulness for household tasks or determining whether an object is one certain size or another.