Rule of 3
Rule of 3 Summary
Rule of 3 is a ad-supported Android app in Education by Schaefer Solutions. Released in Apr 2020 (6 years ago). It has about 14.2K+ installs and 16 ratings with a 4.89★ (excellent) average. Based on AppGoblin estimates, it reaches roughly 688 monthly active users and generates around $<10K monthly revenue (0% IAP / 100% ads). Store metadata: updated Jan 15, 2026.
Recent activity: 45 installs this week (218 over 4 weeks) showing steady growth View trends →
Store info: Last updated on Google Play on Jan 15, 2026 .
4.89★
Ratings: 16
Screenshots
App Description
Ideal application to calculate rule of 3, directly and inversely proportional
This app helps you calculate proportions using the rule of three. It's easy to use and includes a helpful explanation of the rule.
Features:
Calculate proportions using the rule of three
Learn how to calculate the rule of three
Simple and easy-to-use interface
Benefits:
Save time and effort by using the app to calculate proportions for you
Learn how to calculate the rule of three so you can use it without the app
Use the app in a variety of situations, such as cooking, baking, and photography
Download the Rule of 3 app today and make calculating proportions a breeze!