New AR technology make easy to measure lenght on the fly with AR Ruler.

Single measure ruler - draw one line with length.
Chain measure ruler - measure several lines one by one.
Perimeter measure ruler - several lines with close perimeter form last point to first.

Colors - for separate different measures.

What's New

Version 2.0

Completely new Ruler

Ratings and Reviews

3.8 out of 5
140 Ratings
140 Ratings

Inaccurate—measures 9% short on iPhone 7+

I made the mistake of trusting this app for dimensioning a project. I didn't need sub-millimeter accuracy, but I did need it to be within a couple mm in a distance of approx. 50 mm. It was way off. Comparing it to a physical ruler and a trusted tape measure, it measures 9% short on my iPhone 7 Plus. What it calls 10 cm is really 9.1 cm. Its "one inch" is roughly 29/32 of an inch.

I don't know if this problem is limited to Plus-sized screens, but the app should be aware of the device it's running on and what that device's dot pitch is so that it can display the ruler accurately. Nine percent short is not a trivial inaccuracy.

Developer Response

Hi. Thank you for feedback, please try to update Ruler, now it's works fine on 7 Plus and others.


Stop please

It’s a simple and useful app, I checked measurements. Please stop asking me to update though. I have a phone that works perfectly well yet isn’t the latest and greatest version. Your app keeps showing up in my updates list for about a year though it’s only applicable to newer phones. Stop. Please stop or I’ve got to delete it and start carrying my old school tape measure. Repeat, do like the app but thats driving me nuts.

Developer Response

Hi. We’re sorry we can’t fix incompatible update notification. That’s Apple side bug.
We update this app, but we keep old app as new, you can download it
Please mail me I send you promo code for full version (old ver.) download for free.
Thanks for your feedback.


Wish I Hadn’t Updated

This app used to be soooo helpful! I make jewelry and other small items. I could easily check the measurements of products I was ordering online. Centimeters and inches were both right there constantly at my fingertips without having to go grab a physical ruler, as I often need to find measurements when I am away from home this app was perfect. This is useless to me now. The old version should at least be a feature still.

Developer Response

We add to App Store Old version of Ruler Tape ( with fixed accuracy bugs, now support iPhoneX, iPod touch and all new devices.


Dmitriy Pushkarev
8.8 MB
Requires iOS 11.0 or later. Compatible with iPhone 6s, iPhone 6s Plus, iPhone SE, iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPhone XS, iPhone XS Max, iPhone XR, 12.9-inch iPad Pro, 12.9-inch iPad Pro Wi-Fi + Cellular, 9.7-inch iPad Pro, 9.7-inch iPad Pro Wi-Fi + Cellular, iPad (5th generation), iPad Wi-Fi + Cellular (5th generation), 12.9-inch iPad Pro (2nd generation), 12.9-inch iPad Pro Wi‑Fi + Cellular (2nd generation), 10.5-inch iPad Pro, 10.5-inch iPad Pro Wi‑Fi + Cellular, iPad (6th generation), and iPad Wi-Fi + Cellular (6th generation).
English, French, German, Italian, Russian, Spanish
Age Rating
Rated 4+
© ЯB


  • Family Sharing

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

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