# Mathrax vs Cover Train

The clearest difference is in-app purchases: Cover Train at none against Mathrax's 1. Cover Train also leads on iOS requirement (14.0 vs 17.0). On price, ads and device support there is nothing between them.

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

## The numbers

| Metric | Mathrax | Cover Train |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mathrax-sudoku-and-maths/id645221113/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 6 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 12 MB | 118 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Stanley Lam](https://appshunter.io/developer/453164363) | [DK Bilgi Teknolojileri](https://appshunter.io/developer/1510149782) |

## What reviewers say

### Mathrax

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

This logic puzzle game challenges you to fill grids with numbers based on specific mathematical and parity rules. It offers a variety of board sizes, difficulty levels, and hundreds of puzzles with features like automatic error highlighting and time tracking.

**Highlights:** Number placement logic puzzles, Mathematical operation constraints, Parity (even/odd) rules, Multiple board sizes and difficulty levels, Hundreds of unique levels, Automatic error highlighting, Autosave functionality

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

**In-app purchases (1)**

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


### Cover Train

[App page](https://appshunter.io/ios/app/cover-train/id6461347998)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Mathrax free?

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

### Is Cover Train free?

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

### Do Mathrax or Cover Train have ads?

Both Mathrax and Cover Train show ads.

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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.*