Watch Ruler app for iPhone and iPad

4.4 ( 5024 ratings )

Utilities Productivity
Developer: Florian Student

1.99 USD

Current version: 1.0, last update: 54 years ago
First release : 06 Dec 2016
App size: 29.05 Mb

Measure distances, up to 25 meters, with nothing more than your iPhone and Apple Watch!

This app works by measuring the time offset between the expected and actual reception of a sound signal, and then calculating the distance by multiplying by the speed of sound.

Many thanks to Anne Baumann for her support with the artwork.