# Sudoku :-) — Classic sudoku math puzzle

> Classic Sudoku puzzle game with multiple difficulty levels and helpful tools. (iPhone/iPad app by 建华 范.)

- Source: https://appshunter.io/ios/app/sudoku/id1479022365 (this page in markdown: same URL + `.md`)
- Developer: [建华 范](https://appshunter.io/developer/1444536951)
- Category: Games, Entertainment, Casual, Puzzle
- Price: Free with in-app purchases
- Rating: 4.75/5 from 4 App Store ratings
- Age rating: 4+
- Requires: iOS 8.0 · 78 MB
- Languages: English
- Released: 2019-09-07
- Data updated: 2026-07-09
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/sudoku/id1479022365/reviews.md

## What is Sudoku?

Train your brain at any moment, the best way to learn and improve your skills in this classic puzzle game. 
Enjoy a fun Sudoku game, with thousands of free Sudoku puzzles for both beginners and advanced players. It has a clear, easy to read and customizable Sudoku board, 5 difficulty levels ranging from "Flash" to "Hard".

If you like logic, number-based puzzles, you will love these classic Sudoku puzzles! With Sudoku :-), you won't be looking for a paper sudoku puzzle ever again!

Features:
* Clear interface. No Banner Ads
* 5 difficulty levels
* Thousands of puzzles
* Pencil marks (a.k.a. Notes) available
* Undo to fix mistakes
* Auto-save
* Errors checking (manual and automatic)
* Conflict and error highlighting
* Universal: iPad, iPhone, and iPod touch
* Hints, that help you get past that hurdle
* Pick the theme that best suits your style

Download Sudoku and find more features that will help you become a Sudoku master! Take the Sudoku :-) brain training challenge now!

## Key features

- Thousands of free puzzles
- 5 difficulty levels
- Pencil marks (notes)
- Undo and error checking
- Customizable board themes
- Hints for assistance

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove ADs | $0.99 | one-time |
| 10 Hints | $1.99 | one-time |
| 50 Hints | $7.99 | one-time |
| 250 Hints | $29.99 | one-time |
| 1000 Hints | $59.99 | one-time |
| 5000 Hints | $79.99 | one-time |



## Frequently asked questions about Sudoku

### Does Sudoku :-) have ads?

No, Sudoku :-) is ad-free. The app description explicitly states 'No Banner Ads', ensuring an uninterrupted puzzle experience.

### What devices does Sudoku :-) support?

Sudoku :-) is a universal app, meaning it supports iPhone, iPad, and iPod touch devices. This allows for a consistent experience across your Apple ecosystem.

### How many difficulty levels are available in Sudoku :-)?

Sudoku :-) offers five distinct difficulty levels, ranging from 'Flash' to 'Hard'. This caters to both beginners looking to learn and advanced players seeking a challenge.

### Can I get help if I'm stuck in Sudoku :-)?

Yes, Sudoku :-) provides hints to help you overcome difficult puzzles. It also includes features like 'Undo' and 'Errors checking' to assist with mistakes.

### Is Sudoku :-) suitable for children?

Yes, Sudoku :-) has an age rating of 4+, making it appropriate for children. The game focuses on logic and number skills in a safe environment.

### How often is Sudoku :-) updated?

The latest version of Sudoku :-) is 1.01, and it was last updated on September 7, 2019. This indicates a stable release, though updates may be infrequent.

### What makes Sudoku :-) stand out from other Sudoku apps?

Sudoku :-) offers a clear, customizable interface with no banner ads, alongside a wide range of puzzles and difficulty levels. Features like pencil marks and error highlighting enhance the user experience.

### Can I play Sudoku :-) offline?

The app description does not explicitly mention offline play, but Sudoku puzzles are typically playable without an internet connection. The core gameplay does not require constant online access.

## Version history (last 1 release)

### 1.01 — 2019-09-07

No release notes.

## Apps similar to Sudoku

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Sudoku - The Game](https://appshunter.io/ios/app/sudoku-the-game/id565912764) | 1.0 (1) | Free | Games |
| [Sudoku Up! - Logik Puzzle](https://appshunter.io/ios/app/sudoku-up-logik-puzzle/id1534693185) | 4.9 (8) | Free | Games |
| [Caliber Sort Run](https://appshunter.io/ios/app/caliber-sort-run/id6452676308) | 3.5 (4) | Free | Games |
| [Sudoku HD!](https://appshunter.io/ios/app/sudoku-hd/id397229659) | 4.5 (707) | Free | Games |
| [Sudoku Puzzle - Classic Sudoku](https://appshunter.io/ios/app/sudoku-puzzle-classic-sudoku/id1596100297) | 4.0 (4) | Free | Games |
| [Sudoku - Numbers Game Puzzle](https://appshunter.io/ios/app/sudoku-numbers-game-puzzle/id1309590989) | 4.7 (15) | Free | Games |

## More apps by 建华 范

- [WordBud: Link Word Games Bloom](https://appshunter.io/ios/app/wordbud-link-word-games-bloom/id1398711016)
- [Sudoku Puzzle Games Logic Sudo](https://appshunter.io/ios/app/sudoku-puzzle-games-logic-sudo/id1405701791)
- [Pixel Color by Number Art Game](https://appshunter.io/ios/app/pixel-color-by-number-art-game/id1407567558)
- [Solitaire Klondike Classic⋆](https://appshunter.io/ios/app/solitaire-klondike-classic/id1411112032)
- [Block Puzzle - Hexa](https://appshunter.io/ios/app/block-puzzle-hexa/id1425917434)
- [Jigsaw Puzzle Brain Games](https://appshunter.io/ios/app/jigsaw-puzzle-brain-games/id1440118779)

All apps by 建华 范: https://appshunter.io/developer/1444536951

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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 2026-07-09.*