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Augment Ruler: Measure length and angle


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Put a reference object such as a $1 US dollar bill on a surface, this app lets you measure any distance (<1m) on the same surface. Empowered with the latest Computer Vision and Object Recognition technologies, this app is able to track the dollar bill using the rear camera and detect the accurate scale and orientation of everything on the surface. With this app you have a ruler that's always in your pocket.

** What can be used as a reference object?

(1) Dollar bills!
USD $1
USD $20
RMB 10
YEN 1000
WON 10000
AUD 20
CAD 20
Euro 20
UK £10
UK £20

More currency support is coming.

(2) You can use one iPhone/iPad screen as a reference and use another iPhone/iPad to measure.

(3) Print a tracker. Download a reference image from the link below, and print it on a letter-size paper. With this letter-size tracker you can measure larger distance up to 2 meters.

** What if you don't have any reference object on hand?
This app also provides you a built-in on-screen ruler (Basic Ruler). If you don't have any reference object on hand, you can still use this basic ruler to measure small objects.

Enjoy measuring!

What's New in Version 2.3

What's new in this version:

- A great new feature!! You can now save screenshots and do the re-measuring anytime in them.

- General improvements.


iPhone Screenshot 1
iPhone Screenshot 2
iPhone Screenshot 3
iPhone Screenshot 4
iPhone Screenshot 5
iPad Screenshot 1
iPad Screenshot 2
iPad Screenshot 3
iPad Screenshot 4

Customer Reviews

Works well

Very clever! It worked well when I needed a measurement the other day. The ability to create your own reference item would be nice, since dollar bills don't always lie flat or easily stand up vertically, but it's a really handy app.


Never worked. Crashed and sent me back to my own iPhone home page, several times.

Does not work on iPod Touch and iPad 2

As soon as I attempt to open the app on iPod Touch 4th generation or on iPad 2 the app immediately crashes.

Augment Ruler: Measure length and angle
View In iTunes
This app is designed for both iPhone and iPad
  • $0.99
  • Category: Utilities
  • Updated:
  • Version: 2.3
  • Size: 29.9 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 6.0 or later. Compatible with iPhone, iPad, and iPod touch. This app is optimized for iPhone 5.

Customer Ratings

Current Version:
All Versions: