# Sudoku 6

> A comprehensive Sudoku game with multiple variants, global competition, and advanced features. (iPhone/iPad app by Gyuhyeon Jeon.)

- Source: https://appshunter.io/ios/app/sudoku-6/id568783854 (this page in markdown: same URL + `.md`)
- Developer: [Gyuhyeon Jeon](https://appshunter.io/developer/353770805)
- Category: Games, Entertainment, Board, Puzzle
- Price: Free with in-app purchases
- Rating: 4.40/5 from 8 App Store ratings · 45 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: 2012-11-02
- Data updated: 2026-08-18
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/sudoku-6/id568783854/reviews.md

## What is Sudoku 6?

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 

"SUDOKU6" is an another form using 6x6.
The specialty is that there are various shape in small grids.

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

- 5 types of Sudoku games
- Daily worldwide Sudoku competition
- Infinite puzzles at all levels
- Auto-saving and memo functions
- Unlimited undo/redo
- Game Center integration for rankings

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

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


## Recent user reviews (10 of 45)

All indexed reviews: https://appshunter.io/ios/app/sudoku-6/id568783854/reviews.md

### 5/5 — 버그좀 고쳐주세요

*2024-11-25*

데일리 스도쿠 풀자마자 튕기고 미완료 기록되는 버그 때문에 지금까지18&19초컷 한 것들 중 일부가 날아가고있어요 제발 버그좀 고쳐주세요 진짜 부정행위 같은 거 일절 알 했는데 계속 튕겨요 제발요

### 5/5 — SUDOKU6

*2024-02-11*

Great fun!

### 5/5 — 飽きない

*2023-09-27*

いろんなタイプがあるので、飽きずにずーっとやれる。

### 5/5 — 스도쿠6

*2021-11-14*

이 앱은 스도쿠의 개념을 확! 잡아줍니다
스도쿠가 처음이거나 어려우신준들에게 이앱을
추천합니다  스도쿠6 별 많이눌러주세염
글읽어 주셔셔 감사합미다!!!🌼🌼

### 5/5 — Great fun

*2020-03-04*

Works well. Continues to be interest

### 4/5 — ちょっと暇な時

*2019-04-06*

ちょっと暇な時の暇潰しに最適。
たまに出てくる広告はウザいw

### 5/5 — Great!

*2018-07-11*

簡単に楽しめて面白い。

### 4/5 — 老化防止⁉️

*2017-03-16*

飽きずに、懲りずにやり続けている自分に呆れています❣️

### 5/5 — ゆるゆる

*2016-11-23*

時間つぶしにはもってこい。

### 3/5 — 구매내역삭제

*2016-10-24*

용량부족으로구매내역삭제부탁드려요

## Frequently asked questions about Sudoku 6

### What types of Sudoku puzzles are available?

The app offers five distinct Sudoku game types: Original Sudoku, Greater Than Sudoku, Killer Sudoku, Calculation Sudoku, and Symbol Sudoku. This variety ensures a fresh challenge for all players, catering to different preferences within the Sudoku genre.

### How does the daily competition work?

Each day, players worldwide participate in the same Sudoku puzzle. You can compare your performance and score against others on a global leaderboard, fostering a sense of community and friendly competition.

### Is this app free to play?

The app is free to download and play, offering a substantial amount of content. However, it does include in-app purchases, which may offer additional features or content for those who wish to enhance their experience.

### What devices is this app compatible with?

This application is designed for iPhone and iPad devices. It fully supports Retina display for clear visuals and is optimized for the latest iOS versions, including iOS 8 and newer, as well as iPhone 6 and 6 Plus.

### What are the key features for improving gameplay?

The app includes several helpful features such as candidate memos, auto-memo, unlimited undo/redo, a hint function, and display of duplicate numbers with different colors. These tools assist players in solving puzzles more efficiently and learning from their mistakes.

## Version history (last 5 releases)

### 4.930 — 2024-03-25

Bug fixes and some feature improvements

### 4.920 — 2024-03-18

Bug fixes and some feature improvements

### 4.900 — 2024-01-11

Advertising policy changes

### 4.700 — 2020-09-18

- Support iOS14

### 4.630 — 2020-09-11

- 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)
- [Sudoku9 Pro](https://appshunter.io/ios/app/sudoku9-pro/id386917779)
- [Sudoku 9](https://appshunter.io/ios/app/sudoku-9/id403191170)

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 2026-08-18.*