AR Ruler uses augmented reality technology (AR) to measure different things in the real world with your smartphone’s camera. Simply target aim on the detected horizontal plane and start measuring!
1) Line - allows to measure linear sizes in cm, m, mm or inches.
2) Distance meter - allows to measure distance from device camera to a fixed point on the detected 3D plane.
3) Angle - allows to measure corners on 3D planes.
4) Area and Perimeter.

Photo Ruler is designed to accurately determine the size of any object by either taking a picture of it or measuring it on the screen. With its simple user-friendly design Photo Ruler allows you to measure things just as conveniently and precisely as with a traditional ruler or tape measure.

How to use:

Method 1:

Firstly, please ensure that the object you wish to measure and the object of known length (Base Item) are in the same picture. Double tap on screen to call settings. There is a predefined list of Base Items, including Debit/credit card and Quarter. Select the one you have. It is advised to use the Base Item which is closest in size to the object you wish to measure.

Secondly, ensure that the Base Item and the object you wish to measure are in the same plane and the camera is (or was) parallel to them. This is necessary to avoid image distortions caused by the camera perspective.

Align the Blue arrows against the Base item and Green arrows against the object you want to measure. The length of the object is shown in the top left corner of the screen.

Method 2:

Use screen as a traditional ruler. You can measure size of a small object by placing it on the device's screen and adjusting line limiters against the object. The size of the object will be show at the bottom of the screen automatically.


Given that you have accurately aligned markers, you will receive a measurement that is as precise as when using a traditional ruler or tape measure.

What's New

Version 1.2.2

* Save Augmented reality (AR) measurements to Archive.
* Import image from the Gallery.
* Bug fixes.

Ratings and Reviews

4.4 out of 5

819 Ratings

819 Ratings

Not gettin notifications


I’m not receiving notifications when I get messages through the application. I have gone into my phone settings turned on the notifications for the line app. I’ve also gone through the application and turned it on turned it off I’ve tried re-downloading the app multiple times and I’m still not getting notifications. I didn’t have any issues with it but I recently logged out of the app and log back in and now I’m not getting any notifications. I would be greatly appreciative I could get some help

Please check this it will help u with the popularity !!


I love line and all but it messes a lot of things , it is so simple like the first social media app in the world , it needs more things to spice things up , first when u post something and want to tag friends I wish my friends list show to me than writing the names it will be easier and faster , second we wish we get more free stickers only little amount is free , third we wish we can send pics in the comments section it will be fun ,we also wish when we add someone you get friends suggestions

Only app worse than Line is Kik


I’ve had Line for years due to having a large number of people added. The 5000 friend limit is fine and fair, the stickers are nice, and the amount of features is welcoming. However, this app is very buggy and closes on you often and takes a few attempts sometimes to get started, the customer support team is nonexistent as I’ve emailed and tried to find some contact info multiple times throughout the years and have not heard 1 response for Any issue I’ve had, and to be honest the fact that you c


32 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, French, German, Italian, Japanese, Korean, Polish, Portuguese, Russian, Simplified Chinese, Spanish
Age Rating
Rated 4+
© 2018 Grymala Ltd.
In-App Purchases
  1. Premium PRO $16.99


  • Family Sharing

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

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