Ratio Calc! 4+
Gearing for your R/C car
David Mills
Designed for iPad
-
- $4.99
- Offers In-App Purchases
Screenshots
Description
Ratio Calc is a quick and easy tool for radio control car racers to use trackside. Knowing your final drive ratio (FDR) is very useful for comparison with other racers to determine if your car is geared correctly. You can also view your favourite information on Apple Watch.
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
- Save notes and track name against your favourite cars
- Share ratio/rollout charts
- Download new cars from within the app
- Select measurement units (imperial/metric)
- Select your preferred gear pitch, alternative ratios in other pitches will be shown
- Over 1600 cars/variants in the database
What’s New
Version 6.6
-Support for the latest devices and iOS
-Improved the database update process to show more details
-Removed the text erasing buttons on the text fields when editing notes
-Moved the gear and diameter pickers up so that the results can be seen whilst changing the settings
-Updated database and manufacturers
-Various other little tweaks and improvements
Enjoy your R/C racing!
Ratings and Reviews
Great App - needs an update though
Not a major issue as plenty of cars have not actually changed their internal ratio, but many will look and wonder where there car is….!
Fabulous App!!
Excellent app with great database of cars. I manage to find all my cars (15) of them with ease. I was after internal drive ratios which are all there including substitute settings if required. Very happy with the app.
Great app
I'm giving it 5 stars. It's not perfect, but nothing is. It's got me out of trouble many times at the track.
App Privacy
The developer, David Mills, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer's privacy policy.
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Information
- Seller
- David Mills
- Size
- 12.1 MB
- Category
- Sports
- Compatibility
-
- iPhone
- Requires iOS 9.0 or later.
- iPad
- Requires iPadOS 9.0 or later.
- iPod touch
- Requires iOS 9.0 or later.
- Mac
- Requires macOS 11.0 or later and a Mac with Apple M1 chip or later.
- Apple Watch
- Requires watchOS 3.0 or later.
- Apple Vision
- Requires visionOS 1.0 or later.
- Languages
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English, German, Italian, Spanish
- Age Rating
- 4+
- Copyright
- © 2011-2019 David Mills
- Price
- $4.99
- In-App Purchases
-
- Nice Tip $1.99
- Mega Tip $7.99
- Insane Tip $14.99
- Generous Tip $4.99