Ratio Calc!

7.5.1

David Mills

4.52

25 reviews

$2.99

4.52 · 25 reviews

Download from the App Store

About Ratio Calc!

Ratio Calc! is an overall app developed by David Mills.

Download Statistics

User Ratings

Ratio Calc! is rated 4.52 out of 5 stars. The rating is based on 25 ratings.

App Information

Ratio Calc! costs $2.99 to download. The APK download size is 46.38 MB. The latest version available is 7.5.1. The last update was on November 11, 2025.

Technical Requirements

The app has a content rating of Everyone. The app has been available on Google Play May 2011.

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.

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

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More data about Ratio Calc!

Price	$2.99
Rating	4.52 based on 25 ratings
Ranking	Highly ranked
Version	7.5.1
App download size	46.4 MB
Suitable for	Everyone

Alternative downloads for the Ratio Calc! app

Changelog of Ratio Calc!

No changelog data

Developer information for David Mills

David Mills

Address:

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App Store Rankings for Ratio Calc!

Top rankings

Rank	Country	Category	List
42	Indonesia	Sports	Top Paid
45	Italy	Sports	Top Paid
57	South Korea	Sports	Top Paid
66	Portugal	Sports	Top Paid
69	Austria	Sports	Top Paid
73	Turkey	Sports	Top Paid
75	Switzerland	Sports	Top Paid
80	Netherlands	Sports	Top Paid
83	Denmark	Sports	Top Paid
93	Australia	Sports	Top Paid

Ranking history in Indonesia

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Technologies used by Ratio Calc!

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