# Sudoku vs Stack Em

The clearest difference is iOS requirement: Sudoku at 13.0 against Stack Em's 18.2. 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.

## The numbers

| Metric | Sudoku | Stack Em |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (5 ratings)](https://appshunter.io/ios/app/sudoku-math-puzzle-game/id1060524559/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 85.2% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | — |
| Monetization | Ad-supported | — |
| Size | 20 MB | 44 MB |
| Requires iOS | **13.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [欢 饶](https://appshunter.io/developer/539379568) | [Chris Houston](https://appshunter.io/developer/1340538391) |

## What reviewers say

### Sudoku

[App page](https://appshunter.io/ios/app/sudoku-math-puzzle-game/id1060524559)

This brain game challenges players to fill a 9x9 grid with numbers 1-9, ensuring each row, column, and 3x3 subgrid contains unique digits. It offers multiple difficulty levels and game modes to exercise the mind and improve response speed.

**Highlights:** 9x9 grid filling, Unique number placement, Multiple difficulty levels, Various game modes, Brain exercise, IQ enhancement

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

**In-app purchases:** none


### Stack Em

[App page](https://appshunter.io/ios/app/stack-em-tower/id6761726968)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sudoku free?

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

### Is Stack Em free?

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

### Do Sudoku or Stack Em have ads?

Both Sudoku and Stack Em 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.*