# Sudoku - Classic number puzzle — Original brain training

> Classic Sudoku number puzzle game with customizable difficulty and themes. (iPhone/iPad app by OutOfTheBit Ltd.)

- Source: https://appshunter.io/ios/app/sudoku-classic-number-puzzle/id286210009 (this page in markdown: same URL + `.md`)
- Developer: [OutOfTheBit Ltd](https://appshunter.io/developer/286210012)
- Category: Games, Entertainment, Puzzle, Strategy
- Price: Free with in-app purchases
- Rating: 4.80/5 from 28 App Store ratings · 6 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 48 MB
- Languages: American English, Italian
- Released: 2019-02-12
- Data updated: 2026-08-17
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/sudoku-classic-number-puzzle/id286210009/reviews.md

## What is Sudoku?

Sudoku will tease your brain, challenge you or allow you to unwind and relax. With the easiest interface, it will give you the perfect Sudoku experience. Big numbers, a straight-forward toolbar for the actions you will use the most, plus all the options to personalise your game. Choose your level, from easy to expert, have your mistakes counted and duplicated numbers highlighted or choose the “Pro Mode” to have no help in solving your puzzle. Get hints whenever you are stuck and “pencil in” your notes or erase entries.
 
Choose among 3 themes for the look of your board: the white and elegant, for a light, modern look; the blue for a touch of originality or the dark theme, best for low light environments or to relax even more.
 
To relax or challenge yourself, for your time out or for a bit of brain training, Sudoku is the game for you. 
 
Features of Sudoku:
- Get a new puzzle every time. Sudoku has thousands of different boards for you, all with a unique solution.
- Challenge yourself with 4 difficulty levels: for beginners and experts alike.
- Use the Hints whenever you need a little help getting through the puzzle.
- Make the most of the “Pencil Mode”, taking notes of all the possible numbers that could go in a cell.
- Duplicated numbers in a column, row or block will be highlighted for you to avoid repetitions.
- Erase a number or undo a move easily.
- Go “Pro” to play as if you had pen and paper. No mistakes will be counted for you, no duplicates will be highlighted. It’s just you and your puzzle.
- Choose one of the amazing 3 themes: paperwhite, dark (ideal for playing with less light) and original blue.
- Unlock fun achievements. Can you finish a game in 30 seconds or solve a puzzle without undos? Additional challenges for additional fun.
- Worldwide Leaderboard to compete with players of Sudoku from all over the world.
 
Take this amazing brain training with you anywhere, anytime. Download it now and start playing the classic logic puzzles with numbers straight away. Free.

If you have a critic, suggestion or just want to say "hi" please write us: support@outofthebit.com

Follow us on social media:
Facebook/outofthebit
Twitter: @outofthebit

## Key features

- Multiple difficulty levels
- Hint system
- Pencil mode for notes
- Duplicate number highlighting
- Pro Mode for expert play
- Three customizable themes
- Achievements and leaderboards

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Sudoku Ads Free | $1.99 | one-time |


## Recent user reviews (6 of 6)

All indexed reviews: https://appshunter.io/ios/app/sudoku-classic-number-puzzle/id286210009/reviews.md

### 5/5 — Operations

*2024-05-17*

When I started playing sudoku they did not erase all the corresponding numbers in a row. It made it more challenging by having to remember to erase them yourself. If at all possible I would appreciate it if you could return that to me.

### 2/5 — Not a Pro

*2023-06-07*

Seems like a simple game, but three strikes and your out. Played the game 20 or so times, not a clue why the picks are wrong, no help or clues, no bypass just keep accepting I’m a looser.. ya no fun, two stars for the good attempt.

### 1/5 — Nothing without pressure to open for Publicity made to measured

*2022-09-12, version 6.10*

A good Sudoku game I can well live without!

### 4/5 — Almost perfect

*2011-07-21*

I find this to be one of the best computer-based Sudoku games I have owned. I would recommend it to anyone who enjoys this puzzle. 

The ONLY complaint I have - it needs the option to auto-fill the pencil marks (the "possibles"). 

Other than that lack I have nothing but praise for this game. Definitely a keeper.

### 1/5 — Soldi buttati

*2011-03-07, version 0*

Veramente troppo facile... Non merita

### 3/5 — Good - needs work...

*2008-09-24*

A nice simple interface that is very easy to use.  Allows you to concentrate on the game.  One issue though is that you are unable to reduce or turn off games sounds.  If you have your phone ringer turned up then the click you get when you choose a cell is 'VERY' loud.  The only option seems to be to turn the ringer down :(

## Frequently asked questions about Sudoku

### What are the difficulty levels in Sudoku?

Sudoku offers four difficulty levels: easy, medium, hard, and expert. This allows players of all skill levels, from beginners to seasoned experts, to find a suitable challenge.

### Can I play Sudoku offline?

The description does not explicitly state offline play capabilities. However, as a classic puzzle game, it is likely designed to be playable without an internet connection.

### Does Sudoku have ads?

Yes, Sudoku contains advertisements. This is common for free puzzle games that offer in-app purchases.

### How does the "Pro Mode" work in Sudoku?

In "Pro Mode," Sudoku removes all assistance. Mistakes are not counted, and duplicate numbers are not highlighted, providing a pure, unassisted puzzle-solving experience.

### What themes are available in Sudoku?

Sudoku offers three themes for the game board: a white and elegant theme, a blue theme for originality, and a dark theme ideal for low-light environments or relaxation.

### How often is Sudoku updated?

The latest version of Sudoku is 7.35, and it was last updated on November 21, 2024. This indicates a relatively frequent update schedule.

### What is the age rating for Sudoku?

Sudoku has an age rating of 4+. This means it is considered suitable for children aged four and older.

### Can I compete with other players in Sudoku?

Yes, Sudoku features a Worldwide Leaderboard, allowing you to compete with players from all over the globe and test your puzzle-solving skills against others.

## Version history (last 5 releases)

### 7.40 — 2026-08-11

Bug-fixes

### 7.35 — 2024-11-21

Bug fixes.

### 6.21 — 2023-05-23

We fixed the issue with the interrupted audio. Now you can continue to enjoy your favourite music or podcast while playing. Added support for French version of Poker cards.

### 6.20 — 2023-05-05

Improved Ad handling

### 6.10 — 2022-08-05

Bug fixes

## Apps similar to Sudoku

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Sudoku - Brain Puzzle Games](https://appshunter.io/ios/app/sudoku-brain-puzzle-games/id1442749804) | 4.8 (305,146) | Free | Games |
| [Sudoku.com - Number Games](https://appshunter.io/ios/app/sudokucom-number-games/id1193508329) | 4.8 (1,843,599) | Free | Games |
| [Sudoku & Art – No Ads](https://appshunter.io/ios/app/sudoku-and-art-no-ads/id1464413166) | 4.4 (2,786) | Free | Games |
| [Sudoku Joy: Number Master Game](https://appshunter.io/ios/app/sudoku-joy-number-master-game/id1460985516) | 4.9 (724) | Free | Games |
| [Sudoku· Classic Puzzle Games](https://appshunter.io/ios/app/sudoku-classic-puzzle-games/id1409781798) | 4.7 (63,196) | Free | Games |
| [NYT Games: Wordle & Crossword](https://appshunter.io/ios/app/nyt-games-wordle-and-crossword/id307569751) | 4.8 (292,465) | Free | Games |

## More apps by OutOfTheBit Ltd

- [Tic Tac Toe](https://appshunter.io/ios/app/tic-tac-toe/id287949186)
- [La Scopa - Classic Card Games](https://appshunter.io/ios/app/la-scopa-classic-card-games/id376825329)
- [Ace Wins All Classic Card Game](https://appshunter.io/ios/app/ace-wins-all-classic-card-game/id388401204)
- [La Briscola Classic Card Games](https://appshunter.io/ios/app/la-briscola-classic-card-games/id395480192)
- [The Klondike Solitaire](https://appshunter.io/ios/app/the-klondike-solitaire/id427814191)

All apps by OutOfTheBit Ltd: https://appshunter.io/developer/286210012

---

*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 2026-08-17.*