RC Gear Calculator Pro is a free Android application developed by So Dialed Racetech, under the category of Utilities & Tools. This app is designed to help RC racers calculate their gear ratio with ease. It allows you to enter your current gear ratio and the new gear ratio, and see both ratios and the percentage change. Additionally, you can enter your internal ratio to get the before-and-after Final Drive Ratio (FDR) and your before-and-after tire radius to get changes in rollout.

This app is great for all types of RC racing and bashing. It comes with a built-in internal ratio for hundreds of cars, which is regularly updated. The app remembers your entries, so you don’t need to retype them every time. There is also a detailed help page describing ratios and how to use them. RC Gear Calculator Pro is a must-have for any RC racer who wants to optimize their gear ratio and get the most out of their RC car.