Rule of 3 is made and published by Schaefer Solutions. AppBrain is an independent app data site and isn't affiliated with Schaefer Solutions. The app name, icon, screenshots and description belong to Schaefer Solutions and are shown as published on Google Play.
AppBrain's verdict
Established- Installs
- 15 thousand
- Last updated
- January 14, 2026
- Ads
- Contains ads
- Size
- 20.3 MB
Rule of 3 has 15 thousand installs. It doesn't have enough ratings yet to judge what users think.
User feedback
Ratings and reviews on Google PlayComments on Rule of 3 for Android
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Store listing
By Schaefer Solutions, from Google Play“Ideal application to calculate rule of 3, directly and inversely proportional”
Description by Schaefer Solutions Written by the developer, not by AppBrain. Click to read.
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!
Recent changes:
- New calculation history with share and delete options.
- Copy and share results with a friendly verbal explanation.
- Refreshed interface with clearer titles and intuitive design.
- Enhanced video tab with collapsible info and stable player.
- Localized date formats and fixes for ad display errors.
Safety and technology
Found in the app by AppBrain- Ads
- Contains ads
- Price
- Free
- Libraries
- ?
- App size
- 20.3 MB
- Content rating
- Everyone
Technologies used by Rule of 3
Releases
Updates seen on Google Play- Version
- 1.5.0
- Launched
- April 2020
Alternatives
Similar apps and more from Schaefer SolutionsAlternatives to Rule of 3
More from Schaefer Solutions
Installs
Tracked by AppBrain- Last 30 days
- 190
- Play install range
- 10+ thousand
- Launched
- April 2020
Installs over time
Rule of 3 has been installed 15 thousand times. Over the past 30 days, it has been installed 190 times.
Rankings
Google Play top chartsGoogle Play Rankings for Rule of 3
About the app and developer
About Rule of 3
Rule of 3 is an education app developed by Schaefer Solutions.
Install Statistics
Rule of 3 has been installed 15 thousand times. In the last 30 days, the app was installed 190 times.
User Ratings
The app has no ratings yet.
App Information
Rule of 3 is freely available from Google Play. The app size is 20.32 MB. The latest version available is 1.5.0. The last update was on January 14, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on Google Play since April 2020.
App Performance Report
Get a detailed PDF report for Rule of 3 with download trends, rating history, and key performance statistics — useful for competitive research or tracking your own app. Learn more
Get PDF Report — $29Developer information for Schaefer Solutions
Frequently asked questions about Rule of 3
Is Rule of 3 free?
Yes. Rule of 3 is free on Google Play.
Is Rule of 3 still available?
Yes. Rule of 3 is on Google Play, and the last update we saw was on January 14, 2026.
Does Rule of 3 contain ads?
Yes. Google Play lists Rule of 3 as containing ads.
How large is Rule of 3?
Rule of 3 is 20.32 MB.
Is Rule of 3 suitable for children?
Google Play rates the content of Rule of 3 as suitable for everyone.
How many times has Rule of 3 been installed?
Google Play lists 10,000+ installs for Rule of 3.
Who made Rule of 3?
Rule of 3 was developed by Schaefer Solutions. It is listed in the education category on Google Play.
What are the best alternatives to Rule of 3?
People looking at Rule of 3 also look at these education apps: Proportion-RuleOfThree-Percent, Composed Rule of Three, Aviation Calculations, OneCalc: All-in-one Calculator, Calculator IOS16 Full Size.