# Sudoku 9 vs Sudoku

The clearest difference is update cadence: Sudoku 9 at fortnightly against Sudoku's every 2 months. Sudoku 9 also leads on ratings volume (21 vs 1). Sudoku's advantage is rating (5.0 vs 4.8) and review sentiment (100% vs 90%). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Sudoku 9 sells 2 one-off in-app purchases and Sudoku sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Sudoku holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Sudoku 9 has 21 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 90% of Sudoku 9's written reviews are positive against 100% of Sudoku's.

Sudoku 9 ships an update fortnightly, Sudoku every 2 months. The most recent releases landed on November 10, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Sudoku 9 | Sudoku |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (21 ratings)](https://appshunter.io/ios/app/sudoku-9/id403191170/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sudokuclassic-math-conundrum/id1439558271/reviews)** |
| Number of ratings | **21** | 1 |
| Positive reviews | 89.9% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 24 MB | 10 MB |
| Requires iOS | 15.0 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gyuhyeon Jeon](https://appshunter.io/developer/353770805) | [湘衡 唐](https://appshunter.io/developer/917162297) |

## What reviewers say

### Sudoku 9

[App page](https://appshunter.io/ios/app/sudoku-9/id403191170)

This game offers a vast collection of Sudoku puzzles with various modes and difficulty levels. Enjoy daily challenges, track your progress, and compete with players worldwide. Features include auto-saving, hints, and undo/redo options for a seamless experience.

**Highlights:** 5 types of Sudoku games, Daily worldwide Sudoku competitions, Infinite puzzles at all levels, Auto-saving and unlimited undo/redo, Memo for candidate numbers, Game Center integration for rankings, Hint function

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hint 50 | $0.99 | one-time |
| No Advertisement | $2.99 | one-time |


### Sudoku

[App page](https://appshunter.io/ios/app/sudokuclassic-math-conundrum/id1439558271)

Engage your mind with this classic number puzzle game. Improve concentration and logical thinking by filling grids with numbers 1-9, ensuring no repetition in rows, columns, or 3x3 boxes. It's a great way to exercise your brain daily.

**Highlights:** Number logic reasoning, Daily brain exercise, Improves concentration, Develops brain potential, Easy to learn rules, 9x9 grid puzzles

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $14.99 | one-time |


## Frequently asked questions

### Is Sudoku 9 free?

Sudoku 9 is free to download, with in-app purchases available.

### Is Sudoku free?

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

### Which has better reviews, Sudoku 9 or Sudoku?

Sudoku is rated higher. Sudoku 9 averages 4.8 out of 5 from 21 ratings, while Sudoku averages 5.0 from 1 ratings.

### Do Sudoku 9 or Sudoku have ads?

Both Sudoku 9 and Sudoku show ads.

### Which is updated more often, Sudoku 9 or Sudoku?

Sudoku 9 ships an update fortnightly, and Sudoku every 2 months. Most recently, Sudoku 9 was updated on November 10, 2026 and Sudoku on November 2, 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.*