Bike Gears Lite
By Bootstrap Apps
This app is only available on the App Store for iOS devices.
Bike Gears Lite is designed for cycling enthusiasts to calculate common gear ratio values: gear ratio, gain ratio, gear inches and development all from an intuitive native-app like interface.
It's a great tool for bike builders, mechanics, road, mountain, cyclocross or BMX riders and racers.
You can also make apples to apples comparisons between bikes using normalized ratios that correct for differences in crank lengths or wheel sizes.
Bike Gears Lite supports chainrings with 20-60 teeth and rear sprockets with 8-40 teeth. Many tire size presets are built in, or you can specify a custom tire size for ratio calculations.
Upgrade to the full version of Bike Gears to enter cadence to calculate speed, or create and share gear charts based on chainring, sprocket, crank length and tire size parameters. Save charts for later reference or share by email.
Easy to use and understand
Simple and fast tool
Love this app. Simple and quick. Works great for figuring gear inches quick.
Saves me some math. Just wish it had smaller crank sizes for the little racers.