Best Inverse Proportion Apps

50+ iOS apps curated and reviewed

3.6 avg rating
17 free apps
Updated May 2026

Looking for free inverse proportion apps? 17 of our 50+ tracked titles are free to download β€” no subscription, no trial. The rest are premium picks worth paying for.

Top Picks for Inverse Proportion

More Inverse Proportion apps to explore

4
Ratio Calculator Tool
Ratio Calculator Tool
Ratio Calculator Tool
Ratio calculating companion
Free

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.

Direct proportion calculationsInverse proportion calculationsSolves for unknown values in ratios
πŸ”§ Utilities
(12)
free
5
Proportion_Calculator
Proportion_Calculator
Proportion_Calculator
Proportion Calculator
Free

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.

Solves for unknown values in proportionsProvides labeled step-by-step explanationsFast calculation speed
πŸ“š Education
(2)
free
6
Proportion Ratio Solver
Proportion Ratio Solver
Proportion Ratio Solver
Calculate Ratios & Proportions
Free
πŸ“š Education
(0)
7
Proportions App
Proportions App
Proportions App
by Paolo Montalto
Free
πŸ”§ Utilities
(1)
8
Fraction Help
Fraction Help
Fraction Help
Calculator + Working
Free

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.

Solve fraction equations (add, subtract, multiply, divide)View detailed working for solutionsWork with mixed/partial fractions
πŸ”§ Utilities
(199)
free with in-app purchases
9
Mathematical Imagery Trainer
Mathematical Imagery Trainer
Mathematical Imagery Trainer
Proportion Imagery Trainer
Free

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.

Interactive visual exercisesHands-on problem solvingGradual introduction of math symbols
πŸ“š Education
(3)
free
10
aspect:ratio
aspect:ratio
aspect:ratio
by manolo Sanudo
Free

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.

Calculate any ratioInput base ratioCalculate missing dimension
πŸ”§ Utilities
(4)
free
11
Rule of Three Calculator
Rule of Three Calculator
Rule of Three Calculator
by Saran Dumronggittigule
Free

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.

Ratio calculationProportion solvingFinds unknown numbers
πŸ”§ Utilities
(4)
free
12
Ratio Solver: Proportions
Ratio Solver: Proportions
Ratio Solver: Proportions
simple solver proportions
Free
πŸ”§ Utilities
(0)
13
MathTappers: Equivalents
MathTappers: Equivalents
MathTappers: Equivalents
Fractions, decimals & percents
Free

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.

Match equivalent fractions, decimals, and percentsVisual aids: numberline, 100-grid, pie chartDesigned by math educators and researchers
πŸ“š Education
(10)
free
14
Proportional Scale
Proportional Scale
Proportional Scale
Correctly Resize Dimensions
$1.99

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.

Scale image dimensionsMaintain image proportionsFraction modes
πŸ”§ Utilities
(13)
free
15
Rule of Three - Calculator
Rule of Three - Calculator
Rule of Three - Calculator
Simple Rule of 3 calculator
Free
πŸ”§ Utilities
(0)
16
SAT Math: Number Lite
SAT Math: Number Lite
SAT Math: Number Lite
500+ questions - 52 subtopics
Free

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.

500+ practice questions52 subtopics coveredDetailed explanations for each question
πŸ“š Education
(1)
free
17
Simple ratio calculator
Simple ratio calculator
Simple ratio calculator
Formula Saving Functionality
Free

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.

User-friendly, simple UIFormula saving functionalityRatio calculation for experiments
πŸ“Š Productivity
(0)
ad-supported
18
RATIO - Golden ratio & Silver ratio Calculator
RATIO - Golden ratio & Silver ratio Calculator
RATIO - Golden ratio & Silver ratio Calculator
by SUPER CROWDS, K.K.
Free

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.

Golden Ratio calculationSilver Ratio calculationVisual graphic explanation
πŸ“Š Productivity
(8)
free
19
Ratio Simplifier
Ratio Simplifier
Ratio Simplifier
GCD Calculator & Simplifier
Free
πŸ”§ Utilities
(0)
20
Rule of Proportion PRO
Rule of Proportion PRO
Rule of Proportion PRO
With solution steps
$1.99

Solve proportion problems with ease by entering three of the four variables. This app provides detailed solution steps and saves all calculations in its history. Share your final results and easily manage your calculation history.

Enter 3 of 4 variablesDetailed solution stepsCalculation history
πŸ“š Education
(3)
paid