Используйте приложение APKPure
Историческую версию GearInchy можно получить на Android
Enjoy millions of the latest Android apps, games, music, movies, TV, books, magazines & more. Anytime, anywhere, across your devices.
Gear inches is a system that assigns numerical measurements to bicycle gear ratios, to indicate how low or high a gear is.
This app will help you calculate your bikes gear inch by simply entering wheel, chainring and cog sizes.