Apps in this category may contain mild or occasional cartoon, fantasy or real-life violence, as well as occasional or mild adult, sexually suggestive or horrifying content and may not be suitable for children under 9 years of age.

12+

Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.

17+

You must be at least 17 years old to access this App.

Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.

Gear Speed - Brushless RC Speed Calculator Screenshots

iPhone

Gear Speed - Brushless RC Speed Calculator poster

About Gear Speed - Brushless RC Speed Calculator

Gear Speed is the best gearing tool for your brushless RC car. Forget the slow web calculators with limited features. Gear Speed was designed for you and your speed quest.

Gear Speed calculates your maximum speed. It stores your setups, allows you to include notes for your runs and your setup changes. You can also email this information for permanent record keeping.

Calculates: Speed (MPH/KPH), RPM, Final Drive Ratio, Rollout (now in Inches and MM).
Given: Pinion Size, Spur Size, Transmission Ratio, Tire Diameter (inches/mm), Motor KV, LiPo cell count and cell voltage.

Gear Speed now handles from 1S to 12S LiPo batteries.

Please contact us at ussapps.com to let us know how to make this app even better. Happy racing!

* Note: The above screens are sample setups, you will need to enter your own car's information.

What's New in the Latest Version 2.1.0

Last updated on Sep 26, 2015

Old Versions

This app has been updated by Apple to display the Apple Watch app icon.

- Rollout now in Inches or MM
- Improved Notes View Contrast

Version History

2.1.0

Sep 26, 2015

This app has been updated by Apple to display the Apple Watch app icon.

- Rollout now in Inches or MM
- Improved Notes View Contrast

2.0.0

Jul 31, 2015

This version lets you store unlimited setups to quickly tune your car.
Also includes Notes for each preset to document your results and setup changes.
Upgraded to handle 1S to 12S LiPo power.
New app icon!

1.0.0

Jul 19, 2014

Feedback Report