50+ iOS apps curated and reviewed
Looking for free inverse proportion apps? 17 of our 50+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | — | No | No | May 2026 |
| 2 |  | $4.99 | — | No | No | May 2026 |
| 3 |  | Free | 2.0★ (2) | No | No | May 2026 |
| 4 |  | Free | 4.7★ (16) | No | Yes | Jul 2026 |
| 5 |  | Free | 3.3★ (12) | No | Yes | Jul 2026 |
| 6 |  | Free | — | Yes | No | May 2026 |
| 7 |  | Free | 4.4★ (199) | No | Yes | Jul 2026 |
| 8 |  | Free | 5.0★ (3) | No | No | May 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.
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 app simplifies fraction calculations and learning. It solves various fraction equations, shows detailed steps for understanding, and converts between decimals and fractions. It also helps find factors of numbers.
This app uses interactive visual exercises to teach the concept of proportion. Developed with a mathematics education professor, it guides users from intuitive exploration to symbolic representation, making math meaningful through hands-on problem-solving.
Easily calculate any ratio for design projects. Input a base ratio and either width or height to automatically determine the other dimension. Offers dark and light themes for usability in any lighting.
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 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 educational game helps students master equivalent fractions, decimals, and percents. It offers visual aids like number lines, grids, and pie charts to support understanding. Designed by math educators, it aims to make learning math concepts accessible and engaging.
Easily calculate new image dimensions while preserving aspect ratio to avoid distortion. This tool helps graphic designers, photographers, and professionals accurately resize images for various needs, including blueprinting and sign making.
Prepare for the SAT Math test with over 500 practice questions and detailed explanations covering Number & Operations. Track your progress with visual meters and revise specific topics to ensure readiness for test day.
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 tool helps designers quickly calculate the Golden Ratio and Silver Ratio. Input your desired numbers and instantly see five levels of results presented visually. It simplifies complex calculations for design projects.
Quickly calculate missing dimensions for layouts and designs based on various aspect ratios. Features presets like the golden ratio, custom inputs, and a live visual preview. Automatically copies results to your clipboard.
