Apps for Gearheads by Gearheads
If you are a Gearhead, this is the app for you! Gearhead Apps are built to help us calculate various performance vehicle parameters to help with parts selection from pistons and cams to headers, tires and gears. All of the apps work in both standard and metric units, and none of the apps have ads or require special permissions.
Gearhead Pro is the app that gearheads use for many automotive performance parameters. This app is a great value and literally replaces countless other apps for an all in one Gearhead app. It calculates or estimates numerous engine, exhaust, gearing, tire, suspension, acceleration, weather effects, and other vehicle parameters along with automotive unit conversions and fastener torque and threading parameters. Gearhead Pro is the master app and includes every calculation that is in all of the other apps combined along with forced induction (turbo and superchargers) and automotive unit conversion in addition to fastener torque and threading calculations that are all exclusive to Gearhead Pro.
Gearhead Drag focuses more on the drag racing aspects of calculations. It calculates or estimates numerous engine, exhaust, gearing, tire, suspension, acceleration, and other vehicle parameters. It includes most of the engine and vehicle calculations and also includes the 4 link calculator as well, focusing on the IC and anti-squat. Also included are several acceleration performance and weather effect calculations specifically for drag racing.
Gearhead Offroad is lower cost and includes some more offroad specific calculations. It calculates or estimates numerous engine, exhaust, gearing, tire, suspension, and other vehicle parameters. For offroad it adds outputs such as roll axis and roll center in the 4 link calculator, along with dual coilover springs rates to see what the true spring rate is of a dual coil system.
Gearhead Free(Light) is the free version of the app that gearheads use for automotive performance parameters. It’s always free and still doesn’t have any ads or tricks. It’s a simple app that calculates static compression ratio, engine RPM or vehicle speed, tire size, etc. It has the exact same format and ease of use of the paid apps, so if you like this app and want more, upgrade to one of the above apps.
Easy to use Menus
Simple and easy to navigate between calculating various aspects of engine or vehicle parameters.
Illustrated Instructional Diagrams
There are diagrams in some info pages to illustrate exactly where to measure for more accurate results.
Simplified Information
All negative signs are replaced with slider switches for less confusion and more clear description of things like piston domes/dishes, etc.
App Feature Comparison Chart
