# Gear Ratio Calculator 2 — For optimum gear setting

> Calculates and visualizes bicycle gear ratios for optimal component selection. (iPhone/iPad app by ABT Co., Ltd..)

- Source: https://appshunter.io/ios/app/gear-ratio-calculator-2/id6449957065 (this page in markdown: same URL + `.md`)
- Developer: [ABT Co., Ltd.](https://appshunter.io/developer/411651361)
- Category: Sports, Utilities
- Price: Free with in-app purchases
- Rating: 1.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.2 · 64 MB
- Released: 2023-06-26
- Data updated: 2026-08-18
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/gear-ratio-calculator-2/id6449957065/reviews.md

## What is Gear Ratio Calculator 2?

This is a gear ratio calculation application for bicycles with external gearboxes such as road and MTB.
It creates speed-cadence and gear ratio graphs from 22 different chainwheel, 39 different sprocket, and 70 different tire combinations.
By turning on and off the display for each gear in the outer center and inner center, you can simulate the optimum gear ratio.
This is ideal for helping cyclists who are dissatisfied with their current gear ratios to select replacement parts.


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The app simulates gear ratios with five graphs.

[km/h RPM]
[mph RPM]
[m/s RPM].
The graph is created with speed (km/h mph m/s) on the vertical axis and cadence (RPM) on the horizontal axis.
This graph can be used to display the speeds that vary with crank rpm for each gear position,
You can simulate the combination of parts while checking the graph for the gear ratio that matches the desired speed range.

[Gear Ratio]
Calculates and displays the gear ratio for each position of the selected chainwheel and sprocket.
If the distance between the points on the graph is too far, the load on the rider's legs when shifting gears will be greater, and if they are too close, the load on the legs will be less.

[Gain Ratio]
Calculates and displays the distance traveled per crank revolution for each position of the chainwheel and sprocket.

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Data for chainwheel, sprocket, and tire will be added as needed.

## Key features

- Gear ratio calculation
- Speed-cadence and gear ratio graphs
- Simulation of optimum gear ratios
- Analysis of gear shift load
- Gain ratio calculation
- Extensive component combinations

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove combination limit | $1.99 | one-time |
| Combination comparison | $1.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/gear-ratio-calculator-2/id6449957065/reviews.md

### 1/5 — Does not launch

*2025-03-02*

I want to like this app. But it does not even launch.

## Frequently asked questions about Gear Ratio Calculator 2

### What is Gear Ratio Calculator 2 used for?

Gear Ratio Calculator 2 helps cyclists optimize their gear settings by calculating and visualizing gear ratios. It aids in selecting replacement parts for road and MTB bikes to improve performance.

### What types of graphs does Gear Ratio Calculator 2 create?

Gear Ratio Calculator 2 generates five types of graphs: km/h RPM, mph RPM, m/s RPM, Gear Ratio, and Gain Ratio. These graphs help visualize speed, cadence, and distance per crank revolution.

### Can Gear Ratio Calculator 2 simulate different gear combinations?

Yes, by turning gear displays on and off, you can simulate optimum gear ratios. This allows you to visualize how different chainwheel, sprocket, and tire combinations affect your ride.

### What are the benefits of using Gear Ratio Calculator 2 for cyclists?

Cyclists can use Gear Ratio Calculator 2 to understand the load on their legs when shifting gears and to find the ideal gear ratio for their desired speed range. This can lead to a more comfortable and efficient ride.

### Does Gear Ratio Calculator 2 have ads?

No, Gear Ratio Calculator 2 does not contain advertisements. It is a free application with optional in-app purchases.

### What devices is Gear Ratio Calculator 2 available on?

Gear Ratio Calculator 2 is available on iPhone, iPad, and iPod. It is designed for iOS devices.

### How often is Gear Ratio Calculator 2 updated?

The latest version, 1.1.34, was last updated on May 15, 2025. Data for chainwheel, sprocket, and tire combinations will be added as needed in future updates.

### What is the age rating for Gear Ratio Calculator 2?

Gear Ratio Calculator 2 has an age rating of 4+. This indicates it is suitable for users of all ages.

## Version history (last 5 releases)

### 1.1.34 — 2025-05-15

Fixed a bug after in-app purchase

### 1.1.28 — 2023-08-29

Fixed a bug that caused the application to terminate when parts in use were deleted.

### 1.1.26 — 2023-08-27

Fixed display bug in chart

### 1.1.25 — 2023-08-23

Dual screen mode support for tablets

### 1.0 — 2023-06-26

No release notes.

## Apps similar to Gear Ratio Calculator 2

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Bicycle Gear Ratio App](https://appshunter.io/ios/app/bicycle-gear-ratio-app/id1613932329) | 4.0 (1) | Free | Sports |
| [ROUVY: Real Indoor Cycling App](https://appshunter.io/ios/app/rouvy-real-indoor-cycling-app/id1478239111) | 3.8 (518) | Free | Sports |
| [myETraining](https://appshunter.io/ios/app/myetraining/id672249377) | 4.1 (499) | Free | Sports |
| [ROUVY Companion App](https://appshunter.io/ios/app/rouvy-companion-app/id1585185144) | 2.5 (48) | Free | Sports |
| [Track Gear Calculator](https://appshunter.io/ios/app/track-gear-calculator/id725953062) | 4.1 (11) | $0.99 | Sports |
| [MTB Gear Ratio](https://appshunter.io/ios/app/mtb-gear-ratio/id1508922825) | 3.0 (1) | Free | Sports |

## More apps by ABT Co., Ltd.

- [Gear Ratio Calculator](https://appshunter.io/ios/app/gear-ratio-calculator/id462081397)
- [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

## Related topics

[gear ratio calculator 2](https://appshunter.io/ios/topics/gear-ratio-calculator-2) · [gear ratio calculator](https://appshunter.io/ios/topics/gear-ratio-calculator) · [gear ratio calculator lite](https://appshunter.io/ios/topics/gear-ratio-calculator-lite) · [ratio gear](https://appshunter.io/ios/topics/ratio-gear) · [bmx gear calculator](https://appshunter.io/ios/topics/bmx-gear-calculator)

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*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 2026-08-18.*