Ratio Calc!

Developer: David Mills

Category: Sports

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3.8K installs

76 ratings

668 monthly active users

$<10K monthly revenue est.

IAP 100% · Ad 0%

Install Trends

Weekly +17

Steady

Monthly +34

Steady

Ratio Calc! Summary

Ratio Calc! is a with in-app purchases iOS app in Sports by David Mills. Released in May 2011 (15 years ago). It has 76 ratings with a 4.46★ (good) average. Based on AppGoblin estimates, it reaches roughly 668 monthly active users and generates around $<10K monthly revenue (100% IAP / 0% ads). Store metadata: updated Nov 11, 2025.

Store info: Last updated on App Store on Nov 11, 2025 .

SDKs, Trackers & Permissions

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App Details

Store ID: 436311293

First Released: 2011-05-12

Store Last Updated: 2025-11-11

In-App Purchases: Yes

Ads: No

Website: sllim-code.com

App Store

Crawl Status: Success

AppGoblin First Crawled: 2022-12-06

AppGoblin Last Crawled: 2026-06-17

Ads & App-Ads.txt

App does not have ads.

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4.46★

Ratings: 76

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Screenshots

App 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