Ratio Calc! is made and published by David Mills. AppBrain is an independent app data site and isn't affiliated with David Mills. The app name, icon, screenshots and description belong to David Mills and are shown as published on the App Store.
AppBrain's verdict
Established- Rating on App Store
- 4.52
- 25 ratings
- Last updated
- October 8, 2026
- Size
- 69.3 MB
It doesn't have enough ratings yet to judge what users think.
User feedback
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Store listing
By David Mills, from the App Store
Description by David Mills Written by the developer, not by AppBrain. Click to read.
It lets you quickly select your car by filtering on manufacturer and model. Select your pinion and spur size and the FDR is displayed. Tyre diameter can also be entered to calculate your rollout.
Ratio and roll out charts are also available which plot pinion and spur gear combinations to create very handy reference tables.
- Save your favourite cars for quick access
- Select measurement units (imperial/metric)
- Select your preferred gear pitch, alternative ratios in other pitches will be shown
- Over 2000 cars/variants in the database which is updated regularly
Safety and technology
Found in the app by AppBrain- Price
- Free
- App size
- 69.3 MB
- Content rating
- Everyone
Technologies used by Ratio Calc!
Releases
Updates seen on the App Store- Version
- 7.6
- Launched
- May 2011
No changelog data
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Rankings
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About the app and developer
About Ratio Calc!
Ratio Calc! is a sports app developed by David Mills.
User Ratings
Ratio Calc! is rated 4.52 out of 5 stars. The rating is based on 25 ratings.
App Information
Ratio Calc! is freely available from the App Store. The app size is 69.33 MB. The latest version available is 7.6. The last update was on October 8, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on the App Store since May 2011.
Developer information for David Mills
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