CronoPhone - Phone Software for home made Cronograph.
Made by: Soren Kielsgaard Hansen
This app describes how to make your own home made cronograph, to messure velosity of your Airsoft Hardball guns.
It also has a Rate Of Fire tester (No hardware needed)
The app has a calculator FPS to M/S to Joule and back. And a battery charge time calculator.
Another big part od the app is a guides / how-to section: Angle of...