Rule of 3

Schaefer Solutions Education Contains ads

Ideal application to calculate rule of 3, directly and inversely proportional

Downloads: 15.2K+; on Google Play
Price: Free; No in-app purchases
Updated: Jan 15; 2026 · v1.5.0

Get it onGoogle Play See alternatives

Screenshots

About Rule of 3

It helps in the calculation of simple 3 rule, being it directly or inversely proportional.

What’s new

Version 1.5.0 · Updated January 15, 2026

- 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.

App details

Rule of 3 is a free Education app for Android with 10,000+ installs on Google Play. It was released on April 26, 2020 and last updated on January 15, 2026. It's developed by Schaefer Solutions. It requires Android 7.0 or later. The app contains ads.

Category: Education
Installs: 15,226
In-app purchases: No
Ads: Contains ads
Version: 1.5.0
Size: 22M
Requires Android: 7.0
Content rating: Everyone
Released: April 26, 2020
Last updated: January 15, 2026
Developer: Schaefer Solutions

View on Google Play

Build an app like Rule of 3

Get a ready prompt for Claude Code, Cursor or Lovable: its features and business model, and what its users complain about, for an original app of your own.

Make the prompt →

Is this your app?

Give it a free website

Landing page, privacy policy and app-ads.txt, generated from your store listing.

Create it free

Alternatives to Rule of 3

Looking for apps like Rule of 3? Here are 6 similar Android apps on Google Play. The highest rated is Grand Forks Public Schools (4.4/5), and all 6 are free to download.

Rule of 3 vs. alternatives
App	Rating	Price	Installs	Last updated	Compare
Rule of 3	–	Free	10,000+	Jan 15, 2026
Formación CCU	–	Free	1,000+	–	Compare
Grand Forks Public Schools	4.4 / 5	Free	1,000+	Nov 30, 2023	Compare
Amarnath Sir AC Sir	–	Free	10+	Oct 15, 2025	Compare
ALEXANDER SALONS	–	Free	1+	Sep 2, 2024	Compare
Epson L200 Printer Guide	–	Free	100+	Sep 5, 2023	Compare
QMaths	–	Free	1,000+	Apr 2, 2026	Compare

Compare Rule of 3 with the top alternatives: ratings, updates, ASO score and keyword gaps →

Rule of 3

Screenshots

About Rule of 3

What’s new

Alternatives to Rule of 3

Similar apps on Google Play