# Mex Train vs Ultimate Sudoku App

The clearest difference is update cadence: Ultimate Sudoku App at every 6 days against Mex Train's every 16 months. Mex Train's advantage is iOS requirement (12.4 vs 16.4). 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.

Mex Train ships an update every 16 months, Ultimate Sudoku App every 6 days. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Mex Train | Ultimate Sudoku App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (26 ratings)](https://appshunter.io/ios/app/mex-train/id6448130068/reviews)** | — |
| Number of ratings | **26** | — |
| Positive reviews | 56.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 6 days** |
| Monetization | Free | — |
| Size | 6 MB | 40 MB |
| Requires iOS | **12.4** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Phil Stern](https://appshunter.io/developer/636410771) | [Michele Yin](https://appshunter.io/developer/1802479962) |

## What reviewers say

### Mex Train

[App page](https://appshunter.io/ios/app/mex-train/id6448130068)

A digital adaptation of the popular family domino game. Compete against three AI opponents, strategically arranging your dominoes to build the best train. Utilize hints to guide your moves and optimize your gameplay.

**Highlights:** Play against three computer opponents, Drag and arrange dominoes, Flip dominoes before play, Build your perfect train, Get play hints

**Features:** macOS Compatibility

**In-app purchases:** none


### Ultimate Sudoku App

[App page](https://appshunter.io/ios/app/ultimate-sudoku-app/id6743371040)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Mex Train free?

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

### Is Ultimate Sudoku App free?

Ultimate Sudoku App is free to download, with no in-app purchases.

### Do Mex Train or Ultimate Sudoku App have ads?

Neither Mex Train nor Ultimate Sudoku App shows ads.

### Which is updated more often, Mex Train or Ultimate Sudoku App?

Mex Train ships an update every 16 months, and Ultimate Sudoku App every 6 days. Most recently, Mex Train was updated on October 24, 2026 and Ultimate Sudoku App on October 9, 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.*