Gear Up
iOS app for calculating and comparing bicycle gear ratios.
What it does
Compare multiple drivetrain configurations side-by-side to find optimal gearing for your riding style. Calculate gear ratios, speeds at cadence, gear inches, and development meters for any chainring and cassette combination.
Features
- Side-by-side comparison of multiple gear setups
- Pre-loaded component database (Shimano, SRAM, Campagnolo groupsets)
- Per-setup tire size and cadence parameters
- Automatic bike type inference from components
- Comparison history with auto-save and restore
- Custom chainset and cassette creation
Tech Stack
- Swift / SwiftUI
- SwiftData for persistence
- iOS 17+