# SudokuU vs Sudoku Master Challenges

The clearest difference is in-app purchases: SudokuU at none against Sudoku Master Challenges's 5. SudokuU also leads on ads (none vs shown). Sudoku Master Challenges's advantage is update cadence (every 3 days vs every 12 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Sudoku Master Challenges sells 5 one-off in-app purchases. SudokuU asks for nothing beyond the download.

SudokuU ships an update every 12 months, Sudoku Master Challenges every 3 days. The most recent releases landed on November 11, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | SudokuU | Sudoku Master Challenges |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 12 months | **Every 3 days** |
| Size | 23 MB | 157 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [Scott Johnson](https://appshunter.io/developer/580251998) | [Duralı UYUMAZ](https://appshunter.io/developer/6774352963) |

## What reviewers say

### SudokuU

[App page](https://appshunter.io/ios/app/sudokuu/id1195710531)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sudoku Master Challenges

[App page](https://appshunter.io/ios/app/sudoku-master-challenges/id6774352961)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 Energy | $0.99 | one-time |
| 300 WCoin | $0.99 | one-time |
| 50 Energy + 150 WCoin | $0.99 | one-time |
| No Ads + 100 Energy + 300 WCoin | $1.99 | one-time |
| 1000 Energy + 3000 WCoin | $6.99 | one-time |


## Frequently asked questions

### Is SudokuU free?

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

### Is Sudoku Master Challenges free?

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

### Do SudokuU or Sudoku Master Challenges have ads?

Sudoku Master Challenges shows ads; SudokuU does not.

### Which is updated more often, SudokuU or Sudoku Master Challenges?

SudokuU ships an update every 12 months, and Sudoku Master Challenges every 3 days. Most recently, SudokuU was updated on November 11, 2026 and Sudoku Master Challenges on October 24, 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.*