# Train Puzzle. vs Just Plain Sudoku

The clearest difference is update cadence: Train Puzzle. at every 3 weeks against Just Plain Sudoku's every 2 months. 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.

Train Puzzle. ships an update every 3 weeks, Just Plain Sudoku every 2 months. The most recent releases landed on October 3, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Train Puzzle. | Just Plain Sudoku |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/train-puzzle/id6648780134/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Ad-supported | — |
| Size | 268 MB | 42 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NikSan Tech](https://appshunter.io/developer/961323302) | [Alptug Ince](https://appshunter.io/developer/1803226169) |

## What reviewers say

### Train Puzzle.

[App page](https://appshunter.io/ios/app/train-puzzle/id6648780134)

A level-based puzzle game where you strategically maneuver colored train pieces on a grid to assemble complete trains without collisions. As levels advance, the challenges increase, testing your planning and execution skills to become the ultimate conductor.

**Highlights:** Level-based puzzle gameplay, Strategic piece maneuvering, Collision-free train assembly, Increasingly complex challenges, Grid-based problem-solving

**Features:** macOS Compatibility

**In-app purchases:** none


### Just Plain Sudoku

[App page](https://appshunter.io/ios/app/just-plain-sudoku/id6743500580)

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

**In-app purchases:** none


## Frequently asked questions

### Is Train Puzzle. free?

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

### Is Just Plain Sudoku free?

Just Plain Sudoku is free to download, with no in-app purchases.

### Do Train Puzzle. or Just Plain Sudoku have ads?

Both Train Puzzle. and Just Plain Sudoku show ads.

### Which is updated more often, Train Puzzle. or Just Plain Sudoku?

Train Puzzle. ships an update every 3 weeks, and Just Plain Sudoku every 2 months. Most recently, Train Puzzle. was updated on October 3, 2026 and Just Plain Sudoku on October 19, 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.*