# Problem solver vs Inequality & System Solver

The clearest difference is update cadence: Inequality & System Solver at every 2 months against Problem solver's every 6 months. Problem solver's advantage is iOS requirement (8.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Problem solver ships an update every 6 months, Inequality & System Solver every 2 months. The most recent releases landed on May 16, 2026 and September 3, 2026 respectively.

## The numbers

| Metric | Problem solver | Inequality & System Solver |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.2 (9 ratings)](https://appshunter.io/ios/app/inequality-and-system-solver/id1525084466/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | — | Ad-supported |
| Size | 10 MB | 47 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fabio Giuliani](https://appshunter.io/developer/1333671865) | [Francesco Varotti](https://appshunter.io/developer/1501752853) |

## What reviewers say

### Problem solver

[App page](https://appshunter.io/ios/app/problem-solver-mechanics/id1435700320)

**Features:** macOS Compatibility

**In-app purchases:** none


### Inequality & System Solver

[App page](https://appshunter.io/ios/app/inequality-and-system-solver/id1525084466)

This app provides step-by-step solutions for inequalities and systems of inequalities. It includes practice exercises, theory pages, and a dedicated math keyboard for easy input. Ideal for students and math enthusiasts seeking to understand and solve mathematical challenges.

**Highlights:** Step-by-step inequality solutions, Systems of inequalities solver, Practice exercises with solutions, Integrated theory pages, Dedicated math keyboard

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

**In-app purchases:** none


## Frequently asked questions

### Is Problem solver free?

Problem solver is free to download, with no in-app purchases.

### Is Inequality & System Solver free?

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

### Do Problem solver or Inequality & System Solver have ads?

Both Problem solver and Inequality & System Solver show ads.

### Which is updated more often, Problem solver or Inequality & System Solver?

Problem solver ships an update every 6 months, and Inequality & System Solver every 2 months. Most recently, Problem solver was updated on May 16, 2026 and Inequality & System Solver on September 3, 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.*