Rule of 3- CrossMultiplication
The quick ratio calculator
Archived App (Last seen on 13 May 2026)
This is an archived listing of the app previously available on the App Store.Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.
About
This app simplifies calculations for proportions and ratios. It offers a quick way to solve problems involving multiplication rules. The premium version provides an ad-free experience for enhanced usability.
What's New in Rule of 3
3.8
August 24, 2022
Minor bug fixes
Developer apps
FAQ
What is Rule of 3 used for?
Rule of 3 is a mathematical method used to solve problems involving proportions. This application helps you perform these calculations quickly and efficiently.
Does Rule of 3 have ads?
The PRO version of Rule of 3 is provided without ads for a better user experience. The base version's ad presence is not specified, but the paid version guarantees an ad-free environment.
What devices is Rule of 3 available on?
Rule of 3 is available on iPhone, iPad, and iPod devices, making it accessible for Apple users across different platforms.
How often is Rule of 3 updated?
The latest version of Rule of 3 is 3.8, and it was last updated on August 24, 2022. This indicates a history of maintenance and potential improvements.
What is the price of Rule of 3?
Rule of 3 is available for purchase at $0.99. This one-time payment grants you access to its calculation features.
What is the age rating for Rule of 3?
Rule of 3 has an age rating of 4+, making it suitable for a wide range of users, including younger students learning about proportions.
Can I copy results from Rule of 3?
Yes, the result of your calculation can be easily copied to the clipboard with a shortcut button, allowing for seamless integration into other documents or applications.
How does Rule of 3 compare to other calculators?
Rule of 3 is specifically designed for product multiplication and ratio problems, offering a streamlined experience for these particular calculations compared to general-purpose calculators.
