Rule of 3: AI Calculator
Smart Proportion Ratio Solver
Free · In‑App Purchases · Designed for iPad
Quickly solve for X with our AI Rule of Three and Proportion Calculator. Instantly accurate results help you save time and simplify calculations.
Solve proportions instantly. Our app is the fast and easy way to master the Rule of 3.
Tired of complex math apps? We designed this calculator to be the fastest, most intuitive tool for solving proportions, ratios, and percentages. Whether you're a student needing a step-by-step homework check, a designer calculating aspect ratios, or just need to solve a cross multiplication problem quickly, this is the app for you.
FEATURES:
BLAZING FAST & EASY Our minimalist interface is clean and clutter-free. Enter your values and get an instant result. No complicated buttons, no lag.
YOUR GO-TO MATH TOOL From simple percentage calculations to complex ratio problems, this is the one tool you'll need. It's powerful, simple, and always ready.
Download now and make math simple!
PRO FEATURES
ELEGANT DARK MODE Study or work comfortably in any lighting. Our beautiful Dark Mode is easy on the eyes, perfect for late-night sessions or use in any professional setting.
AI EXPLANATIONS (New!) Don't just get the answer—understand it. Our revolutionary AI feature provides a clear, step-by-step breakdown of the calculation. It instantly tells you if the problem is a direct or inverse proportion and explains why, making it the perfect educational tool.
A subscription is needed to unlock PRO features including Dark mode and AI Explanation. Payment will be charged to your Apple ID account upon confirming the purchase. Subscriptions automatically renew unless canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage or cancel your subscription at any time from your account settings in the App Store.
Read the EULA Terms in the following link https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
This app hasn’t received enough ratings or reviews to display an overview.
The developer, Juan Antonio Veloz Gutierrez, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Juan Antonio Veloz Gutierrez
- Size
- 145.6 MB
- Category
- Utilities
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- PRO Rule of Three Calculator Weekly $0.99
- PRO Rule of Three Calculator Yearly $7.99
- Copyright
- © Juan Antonio Veloz Gutierrez 2025