Gear Ratio Calculator at App Store analyse

App power index: 155 (based on ranks around App Stores today)
Utilities Sports
Developer: ABT Co., Ltd.
Price: 0 free
Current version: 3.4.0, last update: 5 years ago
First release : 08 Sep 2011
App size: 3.44 Mb
4.4 ( 624 ratings )
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Estimation application downloads and cost

> 3.41k
Monthly downloads
~ $ 1.4k
Estimation App Cost


This application calculates gear ratios for the road bike and the MTB.
Combination of 22 types of chain wheel, 39 types of sprockets and 70 types of tires - Create a graph of the gear ratio and speed-cadence.
By switch ON/OFF the display of each inner / center / outer gear, you can simulate the optimal gear ratio.
This application helps you to choosing a satisfy replacement parts.

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This application allow the simulation of the gear ratio in the four charts.

[km/h RPM]
[mph RPM]
[m/s RPM]
Create a praph, the speed (km/h, mph, m/s) values will be displayed on the vertical axis, and the cadence (rpm) values will be displayed on the horizontal axis.
This graph can be displayed the changes of the speed for each position of the gear in revolutions of the crank.
The gear ratio to match the speed range you want, while viewing a graph, you can simulate a combination of parts.

[Gear Ratio]
Calculates and displays the gear ratio from each position of the selected chain wheel and sprocket.
Increases the burden on the foot when shifting between long distance between points on the graph, the smaller it is close.

[Gain Ratio]
To caliculate and display the distance run by the crank comes full circle.

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* Well add the data of chain wheel, sprocket and tire.
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# Term Store county Place Priority
1 spocket 20
Available in countries
Country Price
Canada 3.99 CAD
China 22 CNY
France 2.99 EUR
Germany 2.99 EUR
Italy 2.99 EUR
Netherlands 2.99 EUR
Portugal 2.99 EUR
Spain 2.99 EUR
Poland 3.49 EUR
UK 2.99 GBP
India 299 INR
Japan 400 JPY
Korea, Republic Of 4400 KRW
Poland 14.99 PLN
Russia 249 RUB
Turkey 99.99 TRY
USA 2.99 USD
Korea, Republic Of 3.29 USD
Ukraine 3.99 USD
Available for devices
iPhone3GS, iPadWifi, iPad3G, iPhone4, iPodTouchThirdGen, iPodTouchFourthGen, iPad2Wifi, iPad23G, iPhone4S, iPadThirdGen, iPadThirdGen4G, iPhone5, iPodTouchFifthGen, iPadFourthGen, iPadFourthGen4G, iPadMini, iPadMini4G, iPhone5c, iPhone5s, iPadAir, iPadAirCellular, iPadMiniRetina, iPadMiniRetinaCellular, iPhone6, iPhone6Plus, iPadAir2, iPadAir2Cellular, iPadMini3, iPadMini3Cellular, iPodTouchSixthGen, iPhone6s, iPhone6sPlus, iPadMini4, iPadMini4Cellular, iPadPro, iPadProCellular, iPadPro97, iPadPro97Cellular, iPhoneSE, iPhone7, iPhone7Plus, iPad611, iPad612, iPad71, iPad72, iPad73, iPad74, iPhone8, iPhone8Plus, iPhoneX, iPad75, iPad76, iPhoneXS, iPhoneXSMax, iPhoneXR, iPad812, iPad834, iPad856, iPad878, Watch4, iPadMini5, iPadMini5Cellular, iPadAir3, iPadAir3Cellular, iPodTouchSeventhGen, iPhone11, iPhone11Pro, Watch5, iPadSeventhGen, iPadSeventhGenCellular, iPhone11ProMax, iPhoneSESecondGen, iPadProSecondGen, iPadProSecondGenCellular, iPadProFourthGen, iPadProFourthGenCellular,