Windows Phone Airsoft App

The app has a full set of calculators and converters
"FPS to M/S to Joule" And back again
Battery charge time calculator
Gear set Ratio calculator
Rate of Fire Calculator

Measuring software
It has a Rate Of Fire tester - No hardware needed, it uses the microphone.
The app also describes how to make your own Cronograph, to measure velocity of your Airsoft Hardball guns.

Guides and How-To
Another big part of the app is a guides / how-to section.
Angle of engagement, Gearbox assembly, Short Stroke, Mosfet, etc.
Detailed guides with Pictures.

In other words
A full Airsoft / Hardball / softgun app with everything you need for your hobby.

Product ID

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Airsoft, Hardball, Chronograph, Rate of fire, Calculator