Needs work – Gear Speed - Brushless RC Speed Calculator Review

I'm only giving it 3 stars because I tricked it to work. Need a way to set differential gear ratio. I tried calculating speed of new xmaxx. Found several calculators that work great online and figured I'd try the app. The only way I managed to get the app to produce close to accurate speeds was to set cell voltage to 3.75 and cells on 2. I'm appalled that I paid for an app that isn't actually accurate when it's marketed as a calculator.
Review by Dynafld103 on Gear Speed - Brushless RC Speed Calculator.