# Gear Ratio Calculator > Bicycle gear ratio and speed-cadence calculator with simulation graphs. (iPhone/iPad app by ABT Co., Ltd..) - Source: https://appshunter.io/ios/app/gear-ratio-calculator/id462081397 (this page in markdown: same URL + `.md`) - Developer: [ABT Co., Ltd.](https://appshunter.io/developer/411651361) - Category: Sports, Utilities - Price: $2.99 - Rating: 5.00/5 from 1 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 8.4 · 3 MB - Languages: English, French, Italian, Japanese - Released: 2011-09-08 - Data updated: 2026-07-04 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/gear-ratio-calculator/id462081397/reviews.md ## What is Gear Ratio Calculator? 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. -------------- 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. ------------------- * We'll add the data of chain wheel, sprocket and tire. ## Key features - Gear ratio calculation for road and MTB - Speed-cadence graph generation - Simulation of gear combinations - Analysis of speed vs. cadence - Gain ratio calculation - Assistance in selecting replacement parts ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/gear-ratio-calculator/id462081397/reviews.md ### 5/5 — Great app! *2013-12-14, version 3.3.0* Fast and functional. Just what I need. ### 1/5 — Cool app but disfunctional *2012-10-31, version 3.1.0* The app for the iPad loads correctly but then rotates 90 degrees and locks itself in that portrait position with only half the screen showing. I like the app and its graphical approach to displaying data, but it needs a tuneup to fix the bug that is causing it to rotate and lock!! Appears to be missing one or more of the data screens as well!!! ## Frequently asked questions about Gear Ratio Calculator ### What devices does Gear Ratio Calculator support? Gear Ratio Calculator is available for iPhone, iPad, and iPod touch devices. It was developed by ABT Co., Ltd. and last updated on September 15, 2017. ### How much does Gear Ratio Calculator cost? Gear Ratio Calculator is a paid application priced at $2.99. It does not appear to have any in-app purchases or a subscription model. ### What is the age rating for Gear Ratio Calculator? Gear Ratio Calculator has an age rating of 4+, making it suitable for a wide range of users. The app was first released on September 8, 2011. ### How often is Gear Ratio Calculator updated? The latest version of Gear Ratio Calculator, 3.4.0, was released on September 15, 2017. While the app has not been updated recently, it offers a comprehensive set of features for gear ratio calculations. ### What kind of graphs can Gear Ratio Calculator create? Gear Ratio Calculator can create four types of graphs: km/h RPM, mph RPM, m/s RPM, and Gear Ratio. These graphs help visualize speed, cadence, and gear combinations. ### Can Gear Ratio Calculator help me choose new bike parts? Yes, Gear Ratio Calculator is designed to help you choose satisfactory replacement parts. By simulating gear ratios and analyzing speed-cadence graphs, you can make informed decisions about your bicycle's components. ### Does Gear Ratio Calculator have ads? The provided data does not specify whether Gear Ratio Calculator contains advertisements. However, it is a paid application, which often implies an ad-free experience. ### What is the gain ratio in Gear Ratio Calculator? The gain ratio in Gear Ratio Calculator calculates and displays the distance run by the crank with each full circle. This metric helps understand how far you travel per crank revolution. ## Version history (last 5 releases) ### 3.4.0 — 2017-09-15 This app has been updated by Apple to display the Apple Watch app icon. Improved stability on iOS10 ### 3.3.0 — 2013-12-12 - Support iOS7 ### 3.2.0 — 2013-01-11 Implementation of graph zoom display (Change to implement your own graph library) ### 3.1.1 — 2012-11-28 = Bug Fix = Fixed a bug that can not correspond to the rotation at iOS6 ### 3.1.0 — 2012-10-17 Support for iPhone5 ## Apps similar to Gear Ratio Calculator | App | Rating | Price | Category | | --- | --- | --- | --- | | [Darts Reviews TV](https://appshunter.io/ios/app/darts-reviews-tv/id1535955903) | — | Free | Sports | | [Fishing Friend](https://appshunter.io/ios/app/fishing-friend/id508487103) | 4.2 (6) | $4.99 | Sports | | [Track Gear Calculator](https://appshunter.io/ios/app/track-gear-calculator/id725953062) | 4.1 (11) | $0.99 | Sports | | [GPS Rally Odometer](https://appshunter.io/ios/app/gps-rally-odometer/id1072411708) | 5.0 (1) | $15.99 | Sports | | [iHunt Journal](https://appshunter.io/ios/app/ihunt-journal/id379111758) | 5.0 (5) | $11.99 | Sports | | [FormBeat](https://appshunter.io/ios/app/formbeat/id1539444595) | 4.5 (8) | Free | Sports | ## More apps by ABT Co., Ltd. - [Handmade Soap Calculator](https://appshunter.io/ios/app/handmade-soap-calculator/id498929150) - [ERG Mouse](https://appshunter.io/ios/app/erg-mouse/id549757387) - [Gear Ratio Calculator Lite](https://appshunter.io/ios/app/gear-ratio-calculator-lite/id580455357) - [Handmade Soap Calculator Lite](https://appshunter.io/ios/app/handmade-soap-calculator-lite/id592082037) - [Komado2 Lite](https://appshunter.io/ios/app/komado2-lite/id647793005) All apps by ABT Co., Ltd.: https://appshunter.io/developer/411651361 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-04.*