- 50% OFF FOR A LIMITED TIME – Take advantage of our discounted pricing today! Simply measure length in cm or inches using your iPhone or iPod-touch. i-Ruler™ is the most comfortable and easy to use ruler for your iPhone, See screenshots or just download and try it out! Just put your finger on the screen and slide your iPhone. It's as simple as that! You can select the ruler type by tapping once on the screen. Now you can take a ruler wherever you go! You must give it a try! Doesn't contain any annoying ads!!! You can watch this demonstration video: http://youtu.be/Vx2c7hekUbI Important: iPhone and iPod-touch only, measurements with iPad is not supported (you'll get inaccurate results). We're working on iPad version and it would be available soon. If you have problems with the application please use the application support otherwise I cannot contact you to understand the problem.