iPhone Screenshots


Caliper App is a handy and easy to use measuring tool for your phone.
It is ideal for accurately measuring small items nuts, bolts, washers and screws etc. With the jaws fully extended Caliper App can measure items almost full screen length.

1 Measure in mm, cm, inches as a fraction or inches as a decimal number.
2.Displays both digital readout and vernier scale

What’s New

Version 1.1

1. New interface includes a vernier scale.
2. High resolution for retina display.
3. Added mm scale.
4. Improved accuracy.
5. Both jaws are now moveable.
6. Inch fraction now reads down to 1/128th of an inch.
7. Added fine adjustment wheel.
8. New icon.

Ratings and Reviews

2.5 out of 5
32 Ratings
32 Ratings
Macosman ,

Useful- needs one tweak

I was just getting ready to buy a real caliper but thought I would try this first.

It works great and is exactly what I needed.

It just needs one thing- and others have mentioned it- the ability to change the background color. The first thing I had to measure was solid black. Doable but would have been much easier with a contrast background color.

troymstacey ,

Cool but two bugs

Nifty gadget. Handy. Clever. Useful. However (bug #1) on the SETTINGS screen, the title bar sits on top of the INCHES FRACTIONS setting, so you cannot select that option. And (bug #2) turning on ability move the VERNIER JAW doesn't work - switches to ON, but once you leave the settings screen and go back to the caliper, you can't move the jaw, and return to the settings screen, you see the option defaults back to off.
iPhone 6s, iOS 10.0.1

PuffyClementine ,


Very pleased. Nice little tool that works exactly as stated. No problems at all!! Hey, it's free. Very easy to change from metric, inch, etc. Love the ability to lock the caliper jaws and set the sensitivity for moving them. The ad at the top is not in the way at all and doesnt bother me. Nice little measuring tool to have on the iPhone for easy use anywhere.


Peter Pomlett
596.3 KB
Requires iOS 5.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2009 PongoSoft


  • Family Sharing

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

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