Rule of Three

Andre Pestana

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About this app

Rule of Three is the simplest and most intuitive way to learn and calculate proportions.
Whether you're a student, a teacher, or someone who needs quick answers for everyday situations, this app helps you understand and apply the Rule of Three with clarity and confidence.

⭐ What is the Rule of Three?

The Rule of Three is an easy method used to solve proportional problems. If you know three values in a proportion, the app helps you instantly find the fourth. It’s useful for math learning, financial calculations, recipe adjustments, unit conversions, and everyday reasoning.

🔢 Key Features
✔ Easy Calculations

Enter the known values, tap “Calculate,” and get your result immediately.
No confusion, no unnecessary steps.

✔ Learn the Concept

A dedicated Learn section explains the Rule of Three in a fun, simple, and visual way.
You'll discover:

- What the Rule of Three is
- Common real-life examples
- How to calculate step by step
- Interesting history and math facts

Suitable for all ages and skill levels.

✔ Visual Proportion Display

See your proportion represented with a colorful, easy-to-understand bar chart.
Perfect for visual learners, teachers, and students.

✔ Shareable Results

Generate a clean, beautiful image of your calculation to share with friends, classmates, or coworkers.
Great for homework, reports, or quick communication.
(Images are created locally and not stored by the app.)

✔ Designed for Everyone

- Kids
- Adults
- Students
-Teachers
-Professionals
- Anyone needing quick proportional reasoning

The interface is clean, friendly, and suitable both for quick calculations and for learning.

📚 Where is the Rule of Three Used?

- School math problems
- Percentage changes
- Recipe scaling
- Travel and speed planning
- Financial comparisons
- Discounts and prices
- Unit conversions
- Productivity and work planning

If it involves proportions, this app makes it simple.

🔒 Private by Design

The app does not collect personal data, does not track you, and does not require an internet connection to function.
Everything happens on your device.

🎯 Why You'll Love It

- Fast and accurate
- Great for learning or teaching
- Helps build intuitive mathematical thinking
- Clean design
- No distractions
- Works fully offline

Master proportions the easy way.
Download Rule of Three and make proportional reasoning simple, visual, and fun.

What’s new

**Features**
- Proportion Calculator: Input three values to calculate the fourth value based on the Rule of Three.
- Rule of Three Explanation: Provides a detailed explanation of how the calculation is performed.
- User-Friendly Interface: Simple and intuitive design for easy navigation and use.
- Sharing Results: Share your calculations and results via social media or messaging apps.
- Android Platform Support: Available on Android devices.