Ruler

Name: Ruler
Rating: 4.4 (114225 reviews)
Author: NixGame

NixGame

4.4 • 10M+

Safe

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Compliance: Law-aligned
Category: Tools
Download: 10M+
Safety: 100% Safe
Price: Free
Developer: NixGame

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Screenshots

About this app

Measure anything with your phone easily and accurately. Ruler App turns your smartphone into a simple and reliable measurement tool. Use it at home, at work, or for school. Quickly measure objects, lines, and angles with ease. Features: 📏 Digital ruler and tape measure – measure length and size directly on your screen 📱 Screen ruler – convenient for quick measurements 🔢 Unit converter – switch between inches, centimeters, and millimeters 📐 Measure objects and lines – check distance, width, or diameter ⚙️ Caliper mode – precise measurements for small objects 📊 Protractor – measure angles up to 360° 🛠 Multiple modes – point, line, level, and screen measurement Benefits: ✅ Fast and accurate results ✅ Easy to calibrate and use ✅ Clear, simple interface ✅ Useful for DIY projects, school, office, and everyday tasks This all-in-one measurement app helps you measure length, distance, and angles whenever you need. Keep a digital ruler and tape measure always in your pocket.

🛠️

Built for a job

Ruler focuses on one set of tasks without extra clutter.

⚡

Quick access

Common actions are a tap or two from the main screen.

🔧

Works in the background

It handles its task while you use other apps.

Advantages

The interface stays simple and to the point.
It uses modest resources on most devices.
Settings let you adjust behavior to your needs.

What users say

PiroChu

Jul 9, 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.

Chad K

Dec 6, 2024

118

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.

Jerry L

Mar 5, 2026

This one "just works." And there are some optional settings that can be helpful. like cm or inches. I'm not sure if it can measure an object with the camera. I'm going to pay for the pro version just to support the developer. All the other rulers & tape measure apps had extremely intrusive ads, and I could never get the actual app to function.

John Van Aalst

Feb 10, 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.

Heather Jackson

Oct 1, 2022

215

Easy to use on my Samsung; just click the buttons on screen to get what you need. Nothing is labeled except to change to cm from inch and vice versa so the other options take getting used to since they are "pics". Few short ads (15-30 seconds) that allows even more options like edge screen start, dark mode, always on. This is using the free version which is all I need!

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