Sonar Ruler is a winner in the Best App Ever Awards - "Most innovative use of iPhone hardware" category!
The Amazing New Sonar Ruler is an experimental app that uses echoes to measure distances with your iPhone!
* It uses the same principles that dolphins use to find food! *
It sends a short pulse from the speaker and measures how long that pulse takes to bounce off of something and return to the phone. It then estimates how far away you are.
>> Impress your friends with what this unique app can accomplish using only an iphone!