# Sudoku - Number Brain Games — Classic Sudoku Math Puzzle

> Classic 9x9 number-placement logic puzzle game with daily challenges. (iPhone/iPad app by Doodle Mobile Limited.)

- Source: https://appshunter.io/ios/app/sudoku-number-brain-games/id6476258144 (this page in markdown: same URL + `.md`)
- Developer: [Doodle Mobile Limited](https://appshunter.io/developer/1139648773)
- Category: Games, Entertainment, Board, Puzzle
- Price: Free
- Rating: 4.70/5 from 14,172 App Store ratings · 96 written reviews indexed
- Age rating: 4+
- Requires: iOS 12 · 106 MB
- Languages: American English, Dutch, French (France), German (Germany), Indonesian, Italian, Japanese, Korean, European Portuguese, Chinese (Simplified, China) and 4 more
- Released: 2024-02-03
- Data updated: 2026-08-28
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/sudoku-number-brain-games/id6476258144/reviews.md

## What is Sudoku?

Have fun, train your brain, and get ready to put your logic skills to the test with the popular Sudoku free puzzle game, now available on App Store! Also known as Number Place, this engaging game is loved by millions and is the most popular combinational number-placement brain puzzle in the world. Sudoku Free Puzzle Game has 5000+ challenging Sudoku puzzles everyday to help you keep your brain active, unwind from stress or relax. Download and start the Daily Challenge now!

To play, simply fill the 9×9 grid with digits so that each column, row, and each of the nine 3×3 sub-grids contains all of the digits from 1 to 9. With four perfectly balanced difficulty levels to choose from, you can challenge yourself at any skill level.

Complete daily challenges and collect trophies to show off your achievements. Turn on/off Notes (Pencil) mode as you like, highlight duplicates to avoid identical numbers in a row, column, and subgrid, and receive intelligent hints whenever you get stuck.

Choose from two input modes: Cell first or Digit first, and enjoy super smooth interfaces like on paper/newspaper. The unlimited undo and eraser features will help you get rid of mistakes, and highlighting of a row, column, and subgrid related to the selected cell will help you discover patterns quickly.

The app also automatically saves your game when you get a phone call, switch applications, or lock the phone so you don't lose progress.

Sudoku Features:
- 4 perfectly balanced difficulty levels
- Complete Daily Challenges to collect trophies
- Turn on/off Notes (Pencil) mode as you like
- Highlight Duplicates to avoid identical numbers in a row, column and subgrid
- Intelligent Hints can guide you through the numbers whenever you get stuck
- 2 Input modes: Cell first or Digit first
- Super smooth interfaces like on paper/newspaper
- Unlimited Undo and Eraser to help you get rid of mistakes
- Highlighting of a row, column and subgrid related to the selected cell to help you discover patterns
- Killer Sudoku, Mini Sudoku and more to come
- Automatically saves your game when you get a phone call, switch applications, or lock the phone

If you're a fan of Sudoku, this is the app for you!

## Key features

- Thousands of daily Sudoku puzzles
- Four difficulty levels
- Notes (Pencil) mode
- Highlight duplicates
- Intelligent hints
- Two input modes
- Automatic game saving

## What do users think of Sudoku?

Overall sentiment: positive

**Pros**

- 👍 Easy to use
- 🚀 Smooth gameplay
- 💡 Challenging levels
- 🧠 Helps keep the brain sharp

**Cons**

- 🐛 Frequent freezing/crashes
- 🔍 Lack of contact info for developers

**Commonly reported bugs**

- Freezing after using auto-complete feature
- Compatibility issues with older devices

**Most requested features**

- Ability to contact developers
- Fix for freezing/crashing issues

## Recent user reviews (10 of 96)

All indexed reviews: https://appshunter.io/ios/app/sudoku-number-brain-games/id6476258144/reviews.md

### 2/5 — Frequent freezes

*2026-08-09*

When playing the daily challenge the game is great.  However, every time I play an event, the game will freeze when the Auto Complete button appears.  It only happens in special events.  I see numerous reviews talking about this.  Please fix your App!

### 1/5 — Complex without benefit

*2026-07-30, version 2.8*

Lots of complexity for little payoff

### 1/5 — 广告太多了！！！

*2026-07-29*

一局游戏开始要看广告，结束也要看广告，有完没完啊？？？？！？！

### 5/5 — Good game

*2026-07-28*

I think this is a good game it has ads but very few. And I think it’s no Wi-Fi needed it’s easy you get to choose the difficulty of the levels and if you like it you should play Meowdoku it’s like sudoku and like this game!

### 5/5 — Ugly

*2026-07-28, version 2.8*

Most messed up app I’ve ever seen

### 2/5 — Don't do reviews

*2026-07-28, version 2.8*

Forced to do!

### 1/5 — Way too many ads

*2026-07-21, version 2.8*

It’s ridiculous

### 5/5 — Outstanding

*2026-07-09, version 2.8*

Amazing

### 1/5 — 讨厌广告

*2026-06-25*

广告太烦人

### 5/5 — My first success! Lining it!

*2026-06-24, version 2.8*

So much fun!

## Frequently asked questions about Sudoku

### What is Sudoku - Number Brain Games?

This app offers a classic Sudoku number-placement puzzle experience. Players fill a 9x9 grid with digits so that each column, row, and 3x3 sub-grid contains all digits from 1 to 9. It's designed to train your brain and test your logic skills.

### What are the key features of this Sudoku app?

Key features include over 5000 daily puzzles, four difficulty levels, a notes (pencil) mode, duplicate highlighting, intelligent hints, two input modes, and an unlimited undo/eraser function. The game also automatically saves your progress.

### Is Sudoku - Number Brain Games free to play?

The app is free to download and play, offering a vast number of puzzles and features without upfront cost. It is supported by advertisements.

### What devices is Sudoku - Number Brain Games compatible with?

The app is available on the App Store, indicating compatibility with iOS devices. The description mentions automatic saving when switching applications or locking the phone, suggesting it functions on mobile devices.

### Who is this app best suited for?

This app is ideal for anyone who enjoys logic puzzles and wants to keep their mind active. It caters to all skill levels, from beginners who can use hints and easier difficulties to experienced players seeking challenging daily puzzles.

## Version history (last 5 releases)

### 2.8 — 2025-12-18

Bug fixes and performance improvements.

### 2.7 — 2025-11-03

Bug fixes and performance improvements.

### 2.6 — 2025-10-16

Bug fixes and performance improvements.

### 2.5 — 2025-09-08

Bug fixes and performance improvements.

### 2.4 — 2025-09-02

Bug fixes and performance improvements.

## Apps similar to Sudoku

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Sudoku - Brain Puzzle Games](https://appshunter.io/ios/app/sudoku-brain-puzzle-games/id1442749804) | 4.8 (305,807) | Free | Games |
| [Sudoku.com - Number Games](https://appshunter.io/ios/app/sudokucom-number-games/id1193508329) | 4.8 (1,847,599) | Free | Games |
| [Sudoku Puzzle - Brain Games](https://appshunter.io/ios/app/sudoku-puzzle-brain-games/id1492978794) | 4.9 (88,339) | Free | Games |
| [Sudoku· Classic Puzzle Games](https://appshunter.io/ios/app/sudoku-classic-puzzle-games/id1409781798) | 4.7 (63,544) | Free | Games |
| [NYT Games: Wordle & Crossword](https://appshunter.io/ios/app/nyt-games-wordle-and-crossword/id307569751) | 4.8 (292,857) | Free | Games |
| [Nonogram.com - Number Games](https://appshunter.io/ios/app/nonogramcom-number-games/id1452992954) | 4.6 (194,213) | Free | Games |

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All apps by Doodle Mobile Limited: https://appshunter.io/developer/1139648773

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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.*