Rule of three
Rule of three Summary
Rule of three is a ad-supported Android app in Tools by NandoAM Apps. Released in Nov 2021 (4 years ago). It has about 25.4K+ installs Based on AppGoblin estimates, it reaches roughly 1.3K monthly active users and generates around $<10K monthly revenue (0% IAP / 100% ads). Store metadata: updated Dec 20, 2025.
Recent activity: 54 installs this week (308 over 4 weeks) showing steady growth View trends →
Store info: Last updated on Google Play on Dec 20, 2025 .
4.79★
Ratings: 0
Screenshots
App Description
Simple and compound direct and inverse rule of three.
With Rule of Three, you will be able to solve simple and compound direct and inverse rules of three in the easiest way.
Enter your data and see the results immediately.
With the application you will be able to calculate:
* Simple rule of three
* Simple inverse rule of three
* Compound rule of three
* Inverse compound rule of three
And if you want to save the result you can do it and consult it whenever you want in "History".
All this makes the app ideal for all kinds of percentage calculations, rule of three for nursing, or rule of three for medicines.