# Mathrax vs Polyomino

The clearest difference is in-app purchases: Polyomino at none against Mathrax's 1. Polyomino also leads on ads (none vs shown) and iOS requirement (7.0 vs 15.0). On price and device support there is nothing between them.

Both are free to download. Mathrax sells 1 one-off in-app purchase. Polyomino asks for nothing beyond the download.

## The numbers

| Metric | Mathrax | Polyomino |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/mathrax-sudoku-and-maths/id645221113/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 12 MB | 13 MB |
| Requires iOS | 15.0 | **7.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Stanley Lam](https://appshunter.io/developer/453164363) | [Yuki Fujimoto](https://appshunter.io/developer/467085185) |

## What reviewers say

### Mathrax

[App page](https://appshunter.io/ios/app/mathrax-sudoku-and-maths/id645221113)

This logic puzzle challenges you to fill grids with numbers based on specific mathematical and parity rules. It offers a vast amount of content with multiple board sizes, difficulty levels, and over 500 unique levels. Features include automatic error highlighting, progress saving, and time tracking.

**Highlights:** Number placement logic puzzles, Mathematical operation conditions, Parity (even/odd) conditions, Multiple board sizes and difficulty levels, Over 500 unique levels, Automatic wrong number highlighting, Autosave unfinished levels, Best completion time recording

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to Full Version | $0.99 | one-time |


### Polyomino

[App page](https://appshunter.io/ios/app/polyomino/id1114281101)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Mathrax free?

Mathrax is free to download, with in-app purchases available.

### Is Polyomino free?

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

### Do Mathrax or Polyomino have ads?

Mathrax shows ads; Polyomino does not.

---

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