# Bike Gear Ratios - Calc Speed,Cadence,Development

> Bicycle gear ratio calculator for speed, cadence, and development analysis. (iPhone/iPad app by Chewy Applications.)

- Source: https://appshunter.io/ios/app/bike-gear-ratios-calc-speedcadencedevelopment/id790320167 (this page in markdown: same URL + `.md`)
- Developer: [Chewy Applications](https://appshunter.io/developer/415417492)
- Category: Sports, Reference
- Price: $1.99
- Rating: 3.00/5 from 3 App Store ratings · 6 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 9 MB
- Languages: English
- Released: 2015-08-13
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/bike-gear-ratios-calc-speedcadencedevelopment/id790320167/reviews.md

## What is Bike Gear Ratios?

A comprehensive app for all your bicycle gearing needs.

The Bike Gear Ratios app provides tables for calculating Gear Ratio, Gear Inches, Development, Cadence at Speed and Speed at Cadence when comparing different Chainring and Cog combinations for your multi speed or single speed bike, taking into account a specific wheel size. It also includes unit conversions between US/UK units and Metric units.

Useful for:
• Making a decision on what Chainring/Cog combination is right for your riding needs (e.g. gears that are better suited for riding around town compared to racing, or gears that are better suited for a flat route compared to a route that has large hills).
• Getting a better understanding of how different gearing effects your real-world riding experience (e.g. what cadence do you need to achieve to get to a certain speed, with a particular gear setup?).
• Converting units of measurement.

Search Function
• Scroll up within a data table to reveal the search box.

Unit Conversion Increments & Accuracy 
• Tap the bottom bar buttons to choose alternative increments (e.g. Miles: 1, 1/2, or 1/4). 
• The table defaults to the largest increment available. 

Broad Categories
• Gear Ratios
• Gear Inches
• Development (m)
• Development (ft)
• Cadence at Speed (mph)
• Cadence at Speed (km/h)
• Speed at Cadence (mph)
• Speed at Cadence (km/h)
• Measurement Unit Conversion

Specific Units Included 
• Inches, Millimeters
• Feet, Meters
• Miles per Hour, Kilometers per Hour

Universal App 
This means you only need to buy it once to be able to install it on all your devices (iPhone, iPod Touch, and iPad). 

If you find this app useful, please leave a review on the App Store. 

If you have suggestions, feature requests, or need support, feel free to contact us through the Settings menu within our apps.

## Key features

- Calculate Gear Ratio, Gear Inches, Development
- Speed at Cadence and Cadence at Speed calculations
- Compare Chainring and Cog combinations
- Wheel size consideration
- US/UK to Metric unit conversion
- Customizable unit increments

## Recent user reviews (6 of 6)

All indexed reviews: https://appshunter.io/ios/app/bike-gear-ratios-calc-speedcadencedevelopment/id790320167/reviews.md

### 3/5 — Needs updating

*2021-04-21, version 2.0*

Great options but with so many riders using larger chainrings 61 just isn’t big enough anymore 😏

### 1/5 — Of limited use for Track cyclists

*2020-02-24*

I paid for this app to try and find out how fast I’d been riding during a motor paced track training session, where I knew my cadence and gear. This app stops it’s numbers too low and slow and is too imprecise to give useful info. 
There are other free apps that tell me precisely how fast I was going

### 1/5 — Crap Crap Crap

*2018-11-22, version 2.0*

Can’t enter own data. Worst £1.99 I’ve spent

### 5/5 — It’s good

*2018-10-24*

I use it a lot with no problems. Recommended

### 3/5 — Ok but

*2017-12-22*

Charts are good. App crashes frequently. No way to adjust tire size, only wheel size. Could be better, hoping for updates.

### 1/5 — Poor

*2016-03-28, version 1.0*

Does not support my chainring size, or allow for tyre impact like a 3" tyre on a 650b wheel. Not happy the free app I was using was better. Poor.

## Frequently asked questions about Bike Gear Ratios

### What is the price of Bike Gear Ratios?

Bike Gear Ratios is a paid app priced at $1.99. This one-time purchase allows installation on all your Apple devices (iPhone, iPod Touch, and iPad).

### Does Bike Gear Ratios have ads?

No, Bike Gear Ratios is ad-free. You can use all its features without any advertisements interrupting your experience.

### What devices is Bike Gear Ratios compatible with?

Bike Gear Ratios is a universal app, meaning it can be installed on your iPhone, iPod Touch, and iPad.

### How often is Bike Gear Ratios updated?

The latest version, 2.0, was released on May 2, 2017. While the app hasn't been updated recently, its core functionality remains relevant for bicycle gearing calculations.

### What is the age rating for Bike Gear Ratios?

Bike Gear Ratios has an age rating of 4+. This indicates it is suitable for users of all ages, with no mature content.

### How does Bike Gear Ratios help with riding decisions?

The app helps you decide on the right chainring/cog combinations for your riding needs, whether for commuting, racing, or hilly routes, by analyzing gear ratios and development.

### Can Bike Gear Ratios help understand my cadence?

Yes, Bike Gear Ratios can calculate Cadence at Speed and Speed at Cadence. This allows you to understand what cadence you need to achieve a certain speed with your current gear setup.

### What kind of unit conversions does Bike Gear Ratios offer?

Bike Gear Ratios supports conversions between US/UK units (inches, feet, miles per hour) and Metric units (millimeters, meters, kilometers per hour).

## Version history (last 2 releases)

### 2.0 — 2017-05-02

This app has been updated by Apple to display the Apple Watch app icon.

- Updated for the iPad Pro screen size and multi-tasking

### 1.0 — 2015-08-13

No release notes.

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## More apps by Chewy Applications

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All apps by Chewy Applications: https://appshunter.io/developer/415417492

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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 2026-06-10.*