Ruler 2.0 - ruler app for high measurement accuracy on the iPhone and iPad. Accurate, exact, precise, precision, correct, true, easy to use and free - these are the words that can describe this ruler app the best way.

  - Save the measurement as a photo
  - 3 colors of the ruler for your comfort
  - Centimeters, millimeters or inches
  - Measure the length only or width and length at the same time

Tap on the measurement result to change it manually.
Pan with two fingers anywhere on the screen for even higher accuracy.

Measure every length and width with precision on-screen Ruler 2.0. Choose your preferred units of measurement - inches (inch), centimeters (cm) or millimeters (mm). Metric and Imperial systems are supported. Use on-screen ruler as you wish. Tap "Save" button to save the result to the Camera Roll of your device.

What's New

Version 2.0.3

Now you can tap on the measurement result to change it manually.
List of supported devices has been updated.

Ratings and Reviews

4.8 out of 5
9 Ratings
9 Ratings
Ruler guy

Great app but...

I like the app. It’s simple and accurate, but I wish I could type in the dimensions in addition to sliding the grid. Sometimes my thumb just doesn’t get things perfect. It’s free, so try it out and decide for yourself. I recommend it.

Developer Response

Thank you for your suggestion. We've implemented this feature in app version 2.0.3.


Slightly miscalibrated on iPhone X

Does what it says, and no ads (which is nice) but the measurement is slightly off on iPhone X. It's only about 1% off, so not the end of the world, but a fix would be nice.

Developer Response

Thanks for your review! We double checked a Ruler 2.0 app on a real iPhone X screen with a professional ruler. Everything is as accurate as possible.


Oleg Osipov
19.2 MB
Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, Russian
Age Rating
Rated 4+
© Oleg Osipov


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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