If you are customizing, building, tuning your performance race car and you are looking for accurate and easy gear ratio calculations this is the app you need.

You can quickly check your intended ratios and also see what a huge difference an adjustment to your ratio, rpm or tire size can make to give you the competitive edge.

This app has been used by a Pro Buggy Off Road driver for getting his car in shape.

Stop messing with pen and paper or trying to remember which math equation to use when you can rely on this app to be consistent every time.