# Sudoku Master Edition vs Concentration

The clearest difference is iOS requirement: Concentration at 13.0 against Sudoku Master Edition's 15.6. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Sudoku Master Edition sells 2 one-off in-app purchases and Concentration sells 6 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Sudoku Master Edition | Concentration |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (7.9K ratings)](https://appshunter.io/ios/app/sudoku-master-edition/id1260190370/reviews)** | — |
| Number of ratings | **7.9K** | — |
| Positive reviews | 63.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 120 MB | 38 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hoolatron Studios](https://appshunter.io/developer/1260190369) | [giscard mboumeden ngandeu](https://appshunter.io/developer/1896494399) |

## What reviewers say

### Sudoku Master Edition

[App page](https://appshunter.io/ios/app/sudoku-master-edition/id1260190370)

This app offers a comprehensive Sudoku experience with numerous customization options, multiple game modes, and difficulty levels. It features a minimalist design, daily challenges, and Apple Pencil integration for a pen-and-paper feel.

**Highlights:** Customizable themes and fonts, Multiple game modes (Lightning, Mistake, Classic, Zen), 5 difficulty levels, Adjustable grid styles, Note-taking and highlighting features, Apple Pencil integration, Daily reminders and auto-complete

**Features:** Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Theme Credit | $0.99 | one-time |
| Remove Ads | $7.99 | one-time |

**What reviewers like**

- 👍 Great app for sudoku
- 👍 Fun game
- 👍 Best design and master level is actually hard
- 👍 Intuitive controls
- 👍 Customizable

**What reviewers complain about**

- 🐛 App freezes and crashes
- 🔋 Battery drain issues
- 🐛 Handwriting recognition problems
- 🐛 Puzzle difficulties are inconsistent
- 🐛 Ads are disruptive and hard to close

**Reported bugs**

- App crashes after completing puzzles
- Handwriting recognition issues with certain numbers
- Saved games disappearing
- Inconsistent behavior when using pencil input
- Inability to enter wrong numbers

**Requested features**

- Dark mode option
- Ability to import custom puzzles
- More themes and color options
- Improved undo/redo functionality
- Ability to differentiate user-entered numbers from pre-filled numbers


### Concentration

[App page](https://appshunter.io/ios/app/concentration-brain-training/id6774982603)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads Forever | $0.99 | one-time |
| First Purchase | $0.99 | one-time |
| Starter Bundle | $1.99 | one-time |
| 800 Coins | $2.99 | one-time |
| 2,000 Coins | $6.99 | one-time |
| 5,000 Coins | $14.99 | one-time |


## Frequently asked questions

### Is Sudoku Master Edition free?

Sudoku Master Edition is free to download, with in-app purchases available.

### Is Concentration free?

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

### Do Sudoku Master Edition or Concentration have ads?

Both Sudoku Master Edition and Concentration 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.*