# Ratio & Proportion Calculator vs Equation & System Solver

The clearest difference is in-app purchases: Equation & System Solver at none against Ratio & Proportion Calculator's 8. Equation & System Solver also leads on rating (4.9 vs 4.7). Ratio & Proportion Calculator's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 2 months). On price, ratings volume, device support and iOS requirement there is nothing between them.

Both are free to download. Ratio & Proportion Calculator sells 8 one-off in-app purchases. Equation & System Solver asks for nothing beyond the download.

Equation & System Solver holds the better App Store score, 4.9 against 4.7. Both are backed by a comparable volume of ratings — 16 and 12 respectively.

Ratio & Proportion Calculator ships an update every 3 weeks, Equation & System Solver every 2 months. The most recent releases landed on October 25, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Ratio & Proportion Calculator | Equation & System Solver |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (16 ratings)](https://appshunter.io/ios/app/ratio-and-proportion-calculator/id1497341674/reviews) | **[4.9 (12 ratings)](https://appshunter.io/ios/app/equation-and-system-solver/id1502274328/reviews)** |
| Number of ratings | **16** | 12 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 180 MB | 47 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Glindemann, Sennoun, Langer GbR](https://appshunter.io/developer/1024972809) | [Francesco Varotti](https://appshunter.io/developer/1501752853) |

## What reviewers say

### Ratio & Proportion Calculator

[App page](https://appshunter.io/ios/app/ratio-and-proportion-calculator/id1497341674)

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.

**Highlights:** Solve proportions with 3 variables, Detailed solution steps, Calculation history, Supports fractions and decimals, Option to remove ads

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| +30 User Tokens | $0.29 | one-time |
| +1 Convenience Token / 6h, max. +2 | $0.59 | one-time |
| +2 Convenience Tokens / 6h, max. +4 | $0.99 | one-time |
| +150 User Tokens | $0.99 | one-time |
| +300 User Tokens | $1.49 | one-time |
| +4 Convenience Tokens / 6h, max. +8 | $1.59 | one-time |
| Remove Ads | $1.99 | one-time |
| Lifetime Access | $1.99 | one-time |


### Equation & System Solver

[App page](https://appshunter.io/ios/app/equation-and-system-solver/id1502274328)

This app provides step-by-step solutions for various types of mathematical equations. It includes practice exercises, theory cards, and an advanced keyboard for easy input of complex symbols.

**Highlights:** Step-by-step equation solving, Practice exercises with solutions, Mathematical theory cards, Advanced mathematical keyboard, Supports various equation types

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Ratio & Proportion Calculator free?

Ratio & Proportion Calculator is free to download, with in-app purchases available.

### Is Equation & System Solver free?

Equation & System Solver is free to download, with no in-app purchases.

### Which has better reviews, Ratio & Proportion Calculator or Equation & System Solver?

Equation & System Solver is rated higher. Ratio & Proportion Calculator averages 4.7 out of 5 from 16 ratings, while Equation & System Solver averages 4.9 from 12 ratings.

### Do Ratio & Proportion Calculator or Equation & System Solver have ads?

Equation & System Solver shows ads; Ratio & Proportion Calculator does not.

### Which is updated more often, Ratio & Proportion Calculator or Equation & System Solver?

Ratio & Proportion Calculator ships an update every 3 weeks, and Equation & System Solver every 2 months. Most recently, Ratio & Proportion Calculator was updated on October 25, 2026 and Equation & System Solver on October 22, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*