# Sudoku9 Pro

> Comprehensive Sudoku game with multiple variants, infinite puzzles, and social features. (iPhone/iPad app by Gyuhyeon Jeon.)

- Source: https://appshunter.io/ios/app/sudoku9-pro/id386917779 (this page in markdown: same URL + `.md`)
- Developer: [Gyuhyeon Jeon](https://appshunter.io/developer/353770805)
- Category: Games, Entertainment, Board, Puzzle
- Price: $2.99 with in-app purchases
- Rating: 4.60/5 from 19 App Store ratings · 81 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 20 MB
- Languages: American English, Arabic, Catalan, Czech, Danish, Dutch, Finnish, French (France), German (Germany), Greek and 21 more
- Released: 2010-08-31
- Data updated: 2026-08-28
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/sudoku9-pro/id386917779/reviews.md

## What is Sudoku9 Pro?

The world's best Sudoku game for iPhone/iPad. 

It provides ease of use and almost every feature you can imagine. 
Enjoy infinite number of sudoku games with powerful features all your life. 
Everyday world sudoku competition 

Features 

- 5 type of Sudoku games
Original sudoku
Greater than sudoku
Killer sudoku 
Calculation sudoku
Symbol sudoku

- Daily Sudoku
Playing same sudoku puzzles with worldwide users everyday

- Facebook/Twitter Integration
Record share on Facebook
Puzzle share on Facebook
Record share on Twitter
Puzzle share on Twitter

- Play again, Watch replay


- Provides infinite number of puzzles at all levels. 
Provides infinite number of puzzles and you can play it all your life. 

- You can choose game level among 5 different levels 

- Auto saving 
Always the state of games will be saved and then you can see the last screen when you restart the game. 

- Memo for candidate numbers 
You can enter candidate numbers in a cell that you don't know the answer immediately. It will help you to play the game. 

- Auto memo
Auto memo is provided. So you can progress the game quickly. 

- Recording game score 
Score of the game is recorded and managed. 

- Resetting game 
If you screw up the game, you can initialize the game. 

- Unlimited undo/redo 
You can go back previous status using undo/redo function. 

- Multiple bookmarks
You can move to saved position using bookmark. You can save 5 bookmarks.

- Supporting 5 languages (English, Korean, Japanese, 2 Chinese) 

- Hint function 
Hint function tells you the answer of a cell when you meet a difficult cell. One hint is provided every 20 minutes.

- Display duplicate numbers 
When you enter a duplicate number, the number will be displayed with different color. It will help you to play games. 

- Full support for Retina display 
Provides clear screen with supporting Retina display 

- When you double tap the screen the mode will be changed to memo mode 

- Display with different color where you need to compare the numbers. 
The cells that you should compare the numbers will be painted with different color. It will help you to play games. 

- Game Center integration
Check worldwide rankings, the best time ranking in each levels

- Various settings 
Sound Effects On / Off, change the language, etc.

- Feedback function
You can report a bug or your opinion, and are able to communicate with the developer.

- iOS8 support
- iPhone 6, iPhone 6 Plus support
- World ranking page

## Key features

- Five Sudoku game types
- Daily worldwide competitions
- Infinite puzzles
- Auto-saving and undo/redo
- Memo and auto-memo functions
- Game Center integration and rankings

## Pricing and in-app purchases

Base price: $2.99.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Hint 50 | $0.99 | one-time |


## Recent user reviews (10 of 81)

All indexed reviews: https://appshunter.io/ios/app/sudoku9-pro/id386917779/reviews.md

### 5/5 — Parfait

*2024-11-19, version 4.930*

Un bel entraînement de l’esprit

### 5/5 — Fenomenal

*2024-08-07, version 4.930*

Un juego bastante bueno

### 5/5 — Pas de pub

*2024-07-29, version 4.930*

Plutôt sympa

### 5/5 — 楽しみ

*2024-04-26, version 4.930*

難しいさがちょうどいい

### 5/5 — 面白い

*2024-04-22, version 4.930*

面白いです。

### 5/5 — 普通で5分を目指して

*2024-04-21, version 4.930*

最低3回が日課になっています。もちろん前後や遊べない時もありますが、普通で5分を目処に出来ています。

### 5/5 — Parfait

*2024-04-21, version 4.930*

Je joue sur Sudoku9Pro depuis longtemps,elle est parfaite.!

### 5/5 — Never rate anything

*2024-04-21, version 4.930*

I’m way addicted to this game. I don’t rate anything ever but this will be the exception. Personally, it’s perfect!

### 5/5 — Anspruchsvoll für zwischendurch.

*2024-04-20, version 4.930*

Das Spiel hat alles, was man braucht. Macht immer wieder Spaß.

### 5/5 — Super

*2024-03-03, version 4.910*

Appli fonctionne très bien. Un plaisir constamment renouvelé. Bravo

## Frequently asked questions about Sudoku9 Pro

### What types of Sudoku puzzles does this app offer?

This app provides five different types of Sudoku games: Original Sudoku, Greater than Sudoku, Killer Sudoku, Calculation Sudoku, and Symbol Sudoku. This variety ensures a diverse and engaging experience for all Sudoku fans.

### How does the app handle saving progress and mistakes?

The game features auto-saving, ensuring your progress is always preserved. You can also utilize unlimited undo/redo functions to go back to previous states if you make a mistake. A reset option is also available to start a game over.

### Is this app free to play?

The app is free to download and play, but it does offer in-app purchases and contains ads. This allows users to enjoy the core game experience while having the option to enhance it or remove advertisements.

### Can I compete with other players?

Yes, the app includes daily worldwide Sudoku competitions where you can play the same puzzles as users globally. It also integrates with Game Center to display worldwide rankings and best time rankings for each level.

### What are the memo functions for?

The app provides a memo function for candidate numbers, allowing you to jot down potential numbers in a cell. An auto-memo feature is also available to help you progress through the game more quickly by automatically suggesting candidates.

## Version history (last 5 releases)

### 4.930 — 2024-03-20

Bug fixes and some feature improvements

### 4.910 — 2024-01-11

Edit advertising policy

### 4.800 — 2020-11-21

- Fixed bugs

### 4.700 — 2020-09-24

- Support iOS14

### 4.630 — 2020-09-17

- Fixed bug related to advertising

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## More apps by Gyuhyeon Jeon

- [반야심경](https://appshunter.io/ios/app/id353770802)
- [천수경](https://appshunter.io/ios/app/id356792134)
- [Diamond Sutra - 金剛經 free](https://appshunter.io/ios/app/diamond-sutra-free/id360391866)
- [Sudoku 9](https://appshunter.io/ios/app/sudoku-9/id403191170)
- [Sudoku 6](https://appshunter.io/ios/app/sudoku-6/id568783854)

All apps by Gyuhyeon Jeon: https://appshunter.io/developer/353770805

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-28.*