Ruler

Name: Ruler
Availability: InStock
Rating: 4.5163397789001465 (110351 reviews)
Author: NixGame

NixGame

Contains ads

4.5

110K reviews

10M+

Downloads

Everyone

About this app

📏 Digital Ruler & Tape Measure on your phone

Turn your device into a smart and precise measuring tool. Perfect for DIY, school, office or everyday use.

📐 Features
Digital ruler & tape measure – measure length directly on screen
Protractor – measure angles up to 360°
Screen ruler – quick on-screen measurements
Unit converter 🔄 – switch between mm and inches
Calibration – adjust for maximum accuracy

✅ Benefits
Fast & precise results
Simple and user-friendly
Metric & imperial units supported
All-in-one: ruler, tape measure, protractor & converter

With Digital Ruler & Tape Measure, you always carry a reliable measuring tool in your pocket.
📥 Download now and measure smarter.

Updated on

16 Sept 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region and age. The developer provided this information and may update it over time.

This app may share these data types with third parties

App activity, App info and performance and Device or other IDs

This app may collect these data types

App activity, App info and performance and Device or other IDs

Data is encrypted in transit

Data can’t be deleted

Ratings and reviews

4.5

108K reviews

PiroChu

9 July 2024

I like the simplicity without unnecessary bells/whistles, just what i was looking for. Nice to simultaneously show inches and centimeters. However, this app only shows in landscape mode and can't flip to portrait mode. Moreover, it also locks up the phone in landscape mode and I can't get back to portrait mode unless I close this app first, which is a pain. I found a similar simple ruler app that can automatically flip between portrait and landscape, so I'll go with that one instead.

46 people found this review helpful

Chad K

6 December 2024

The great: it's accurate (unlike others I've tried) and it's simple. The free version works as needed. The not so great: it's really simple with no ability to customize or show increment numbers by default. Also, the 0 start is right at the screen edge and can only be indented by switching to the paid version, which I may do if this app continues to be useful to me.

87 people found this review helpful

John Van Aalst

10 February 2024

Close, but no cigar. I don't mind its simplicity, but I wanted accuracy. It's OK for crude measurement, but when I tried to calibrate, by aligning the 0 and 4" mark with a ruler, the 1, 2 and 3 inch markings were slightly, but noticeably, misaligned. The "calibrate" function seemed intuitive (finger-drag the ruler), but if my intuition was wrong, I could not find any guidance on the app. My generous 3-stars is only for those who don't care about precision. And, oh, the display is pretty.

64 people found this review helpful