# Gear Ratio Calculator Lite

> Bike gear ratio and speed-cadence calculator with part simulation. (iPhone/iPad app by ABT Co., Ltd..)

- Source: https://appshunter.io/ios/app/gear-ratio-calculator-lite/id580455357 (this page in markdown: same URL + `.md`)
- Developer: [ABT Co., Ltd.](https://appshunter.io/developer/411651361)
- Category: Utilities, Sports
- Price: Free with in-app purchases
- Rating: 2.20/5 from 5 App Store ratings · 15 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.4 · 4 MB
- Languages: American English, French (France), Italian, Japanese
- Released: 2012-12-13
- Data updated: 2026-08-18
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/gear-ratio-calculator-lite/id580455357/reviews.md

## What is Gear Ratio Calculator Lite?

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.

## Key features

- Gear ratio calculation for road and MTB
- Simulation of gear combinations
- Speed-cadence graph generation
- Multiple chainwheel, sprocket, and tire options
- Gear ratio and gain ratio charts
- Optimal part selection assistance

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unrestricted | $2.99 | one-time |


## Recent user reviews (10 of 15)

All indexed reviews: https://appshunter.io/ios/app/gear-ratio-calculator-lite/id580455357/reviews.md

### 1/5 — App closes when any button within settings is touched.

*2025-09-01*

The app will not allow any changes to the preloaded ratios, it won’t allow you to upgrade from within the app either, It will crash, or close upon button press.

### 2/5 — Outdated, doesn't support 12 speed cassettes

*2021-06-22*

Very simple cadence/speed graph. Useful, but doesn't have 12 speed cassette support.

### 4/5 — Yes, it DOES do modern setups!

*2020-08-04, version 3.4.0*

I’ve used this app on and off for years and it’s the only one I’ve found that gives you a graphic display of your gear ratios. The app allows you to save up to five configurations with different chainring and cassette combinations and, for example, do “what-ifs” to an existing setup, which can be very useful when considering an upgrade. 

There are two reviews on here that tell you the app is outdated (“in the dark ages”) because it doesn’t list the latest cassettes or chainring setups.  Oh dear! Are they so “up to date” that they can’t do anything for themselves? If the guy wants a 1x chainring and it isn’t listed then all he has to do is create his own “custom” one. Yes, it takes a lot of effort because he has to press the “+” button, type a name for it then type the number of teeth it has, which can take a novice nearly 15 seconds, but he’ll soon find he can get this down to down to 10 seconds or less with a little practice. When he’s mastered creating his 1x chainring he can do the same for his “modern” wide-range cassettes. Who knows, it might give him the confidence to blow-up his own tyres!

This app is really good but it could be tweaked slightly to be even better. It needs to accommodate 12 speed cassettes (it only goes up to 11 at the moment), and the option to display two setups side-by-side would be nice. But don’t be put off by these unnecessarily bad reviews; they say more about the reviewers than this app.

### 5/5 — Very useful

*2019-06-08*

Was able to enter custom rings and cassette from an older MTB as I'm shopping for a different cassette, and this app works wonderfully. Only flaw I found so far is that the Gain graphs seem off, probably because it doesn't have a setting for crank length. I'm basing my decision mostly on cadence though, so gain is just a curiosity really. Thanks for this app!

### 1/5 — Serious needs updating

*2018-03-27, version 3.4.0*

Useful app in theory, but needs updating to reflect current gear set tends. No wider range 11 speed cassettes, 11-28, 11-32 and 11-34 are now common for road bikes. No options for the new 1x gear sets at all. 
I don’t recommend that you spend anything on this to “unlock” the additional features. Stuck in the dark ages, obviously developed by cyclists with knackered knees who grind up every hill. 
It’s 2018, not 2008.

### 1/5 — Useless

*2018-01-24*

No place for user input

### 1/5 — Ratios pretty basic

*2017-11-16, version 3.4.0*

Both chainrings and cassette ratios are outdated. If 11 speed is the current standard there are limited cassettes and chainrings.
Didn’t see a 52/36 combo anywhere or a 11-32 if this is about selection provide the information required to assist in the selection.

### 5/5 — Excellent gear calculator

*2017-04-27*

I have used this to compare 1x11 , 2x11 , 3x10, and 2x10 Mountain bike gearing for 29, 26 and 650b wheel sizes.  It really helped me understand what the gains and losses were with different solutions.  I hope they update the app so it will work with the next release of IOS. I would even pay to upgrade this app.

### 1/5 — Dont bother I paid for upgrade, too limited not worth 4.49

*2017-02-15, version 3.3.0*

Own the upgrade version and they 
wont let me write a review- Dont waste
your money, UNTIL they truly upgrade 

very limited for road bikes 
Ive used 54,55,56 big rings - they show zip 
who cares if cassette, & tyre size are the 
only variables. Im on 55:42 with 11:28 
dont know why this app suggests upgrade? 
I dont give a rats --- about what I can do 
with ring cassette combinations that exist 
but are NOT shown

### 2/5 — Needs improving

*2015-12-11*

Needs explanations and chart display in addition to the graphs.

## Frequently asked questions about Gear Ratio Calculator Lite

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

Gear Ratio Calculator Lite helps cyclists calculate and visualize gear ratios for road bikes and mountain bikes. It aids in simulating different gear combinations and selecting optimal replacement parts by providing detailed charts and graphs.

### What types of bikes does Gear Ratio Calculator Lite support?

This application is designed to calculate gear ratios for both road bikes and mountain bikes (MTB). It offers a wide range of options for chainwheels, sprockets, and tires to simulate various configurations.

### Can I see how different gears affect my speed and cadence?

Yes, Gear Ratio Calculator Lite allows you to create graphs displaying speed (in km/h, mph, or m/s) against cadence (rpm). This helps you visualize how changes in gear position affect your speed at different pedaling rates.

### How does Gear Ratio Calculator Lite help with choosing parts?

By simulating various gear combinations and displaying their impact on speed and cadence, the app helps you identify the gear ratios that best match your desired performance range. This makes it easier to choose satisfying replacement parts.

### What is the 'Gain Ratio' in Gear Ratio Calculator Lite?

The Gain Ratio calculates and displays the distance your bike travels for each full revolution of the crank. This metric is useful for understanding how efficiently your bike's gearing translates pedal strokes into forward motion.

### Is Gear Ratio Calculator Lite available on all devices?

Gear Ratio Calculator Lite is supported on iPhone, iPad, and iPod devices. It is designed for Apple's iOS ecosystem.

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

The application was last updated on September 15, 2017, with version 3.4.0. While it has not received recent updates, it offers a stable set of features for gear ratio calculations.

### What is the user rating for Gear Ratio Calculator Lite?

Gear Ratio Calculator Lite has a user rating of 2.2 stars based on 5 ratings. This indicates a mixed reception from its user base.

## 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 — 2013-12-17

- Support iOS7

### 1.1.0 — 2013-01-11

Implementation of graph zoom display
(Change to implement your own graph library)

### 1.0.1 — 2012-12-11

- minior bug fix
- 広告を有効化

### 1.0.0 — 2012-12-05

No release notes.

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## 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)
- [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 lite](https://appshunter.io/ios/topics/gear-ratio-calculator-lite) · [gear calculator](https://appshunter.io/ios/topics/gear-calculator) · [ratio gear](https://appshunter.io/ios/topics/ratio-gear) · [bike gear](https://appshunter.io/ios/topics/bike-gear) · [bike gear calculator](https://appshunter.io/ios/topics/bike-gear-calculator) · [gear ratio calculator](https://appshunter.io/ios/topics/gear-ratio-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.*