


248+ iOS apps curated and reviewed
The best proportion ratio solver apps on iPhone average 2.8★ across 248+ titles — we've ranked them by what real users actually keep on their phones. Updated July 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | — | No | No | May 2026 | |
| 2 | Free | — | Yes | No | May 2026 | |
| 3 | $4.99 | — | No | No | May 2026 | |
| 4 | Free | 2.0★ (2) | No | No | May 2026 | |
| 5 | Free | 3.0★ (2) | Yes | No | Jul 2026 | |
| 6 | Free | 4.7★ (16) | No | Yes | Jul 2026 | |
| 7 | Free | — | No | Yes | May 2026 | |
| 8 | Free | 3.3★ (12) | No | Yes | Jul 2026 |












This app helps you find the unknown value in proportions by showing step-by-step calculations. It's useful for various applications, from cooking to science, and offers a simple, fast, and visually appealing way to solve proportion problems.


This app provides step-by-step solutions for mathematical proportions. It's designed for students and math enthusiasts to learn, practice, and simplify calculations with an intuitive interface and theoretical resources.


Easily solve proportion problems by entering three of the four variables. This app provides detailed step-by-step solutions and saves all your calculations in a history for later review. Fractions, decimals, and constants are supported.




This utility app specializes in calculating proportions, solving for an unknown value in direct and inverse ratio equations. It handles scenarios like price increases and speed decreases, offering a simple yet effective tool for proportion-based problems.


This utility app quickly calculates unknown values in everyday ratios. It features a clean interface for easy setup and instant results, making it ideal for school, work, or daily tasks.






This utility app helps you solve problems involving ratios and proportions. It calculates an unknown number based on the relationship between two other known numbers.


This calculator helps solve systems of linear equations with two or three variables. It provides step-by-step solutions, supports various coefficient types, and displays results in both decimal and fractional formats. Users can save and email their equation history.


Instantly solve math problems by taking a picture or typing them in. Get detailed, step-by-step explanations for a wide range of math topics, from basic algebra to advanced calculus. Features include AI-powered camera solving, handwritten problem support, equation graphing, and a scientific calculator.


Easily calculate and save frequently used ratios with a clean, user-friendly interface. Ideal for scientific experiments, cooking, and design projects, this tool simplifies proportion management for enhanced learning and hobbies.




This utility app simplifies calculations for proportional expressions and mathematical formulas. It offers a dedicated ratio calculator for recipes and proportions, and a text calculator that accepts keyboard input or Apple Pencil for complex equations.





