# Sudoku Classic Brain Puzzle — Brain Puzzles & Math Games

> Classic Sudoku number puzzle game for brain training and relaxation. (iPhone/iPad app by TOKYO KYOKUJOY LLC.)

- Source: https://appshunter.io/ios/app/sudoku-classic-brain-puzzle/id6444699070 (this page in markdown: same URL + `.md`)
- Developer: [TOKYO KYOKUJOY LLC](https://appshunter.io/developer/1652472542)
- Category: Games, Board, Puzzle
- Price: Free with in-app purchases
- Rating: 4.80/5 from 3,682 App Store ratings · 242 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 203 MB
- Languages: American English, French (France), German (Germany), Japanese, Korean, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan)
- Released: 2022-12-28
- Data updated: 2026-09-08
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/sudoku-classic-brain-puzzle/id6444699070/reviews.md

## What is Sudoku Classic Brain Puzzle?

Sudoku Free Puzzle Game is an addictive classic puzzle game that can help you train your brain while killing time. This free brain game is the best logic-based board game that is suitable for everyone, no matter you are a Beginner or an Advanced player. Tons of hard Sudoku puzzles are awaiting you to explore. Download and enjoy the challenging journey of number games !

How to play?
The player needs to fill a 9*9 square grid by deduction according to the given number(clue).
The goal is to complete a grid in which each row, each column, and each of the nine 3*3 areas contains all the numbers from 1 to 9.
The numbers 1-9 should appear exactly once in each row, column, and block.Each Sudoku has only one true solution.

Highlights&Features:
- Classic Sudoku comes in 7 perfectly balanced difficultly levels: 6x6, Easy, Medium, Hard, Expert, Extreme,16x16
- Over thousands of Sudoku number puzzles offered.
- Daily Challenges - Complete Daily Challenges and collect trophies.
- Intelligent Hints - guide you through the numbers when you get stuck.
- Unlimited Undos and Erasers. Get rid of the mistakes in free sudoku solver.
- Offline FREE game that you can play anywhere and anytime.
- Useful statistics to keep track of your progress and achievements.
- Pencil marks and Auto Notes option.
- Clean and simple interface with easy controls to play.
- 4 beautiful and gorgeous themes with classic, wooden and casual styles.

Classic Sudoku is a brand-new sudoku number puzzle game as good as with a real pencil and paper. It not only makes you feel relax and fun but also sharpens your mind, exercises both your logical thinking and memory with number strategies. Download free sudoku games and start playing right now and become a professional sudoku player+slover. Beginners can follow the tutorial to learn how to play. The further you go, the higher difficulty you can try. Finally, you will find yourself being a sudoku master. As for sudoku veterans, you guys can go straight to higher levels to start this amazing quest!

What is Sudoku? It is a Game for RALAXING and SELF-IMPROMENT
Classic Sudoku is a classic free logic game, a fun math number puzzle, of Japanese origin and created by the best minds, that consists of filling a board of 81 squares with numbers from 1 to 9. The name of this blocks thing comes from joining the words Su (number in Japanese), doku (unique in Japanese). Hence, the correct spelling is sudoku, rather than suduku, sodoku, soduko, soduku or sedoku. Although they were created in the mid 80's, it was not until 2005 when they started to become fashionable after appearing daily in several international newspapers. Nowadays, it is very rare not to find a newspaper that contains a sudoku among its pages. To solve this math game usually takes between 10 and 30 minutes depending on the difficulty and agility of the player.

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Please see our Privacy Policy at https://www.kyokujoy.com/privacy.html

Please see our Terms of Service at https://www.kyokujoy.com/terms.html

## Key features

- Multiple difficulty levels (6x6 to 16x16)
- Thousands of puzzles
- Daily Challenges with trophies
- Intelligent hints
- Unlimited undos and erasers
- Offline play
- Progress statistics
- Pencil marks and auto notes

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Weekly Subscription | $3.99 | per 7 days |
| Monthly Subscription | $7.99 | per month |
| Yearly Subscription | $49.99 | per year |


## What do users think of Sudoku Classic Brain Puzzle?

Overall sentiment: positive

**Pros**

- 👍 Challenging and enjoyable
- 💡 Keeps mind active and sharp
- 👍 Great for brain stimulation
- 👍 Fun and addictive gameplay

**Cons**

- 🔍 Too many ads
- 🕰️ Ads interrupt gameplay
- 🕰️ Ads take too long to dismiss
- 🔍 Ads for games already owned

**Commonly reported bugs**

- Sound turns off during game
- Difficulty in swiping between numbers and letters

**Most requested features**

- Paid version with no ads
- Hints and solutions explanations
- More difficulty levels

## Recent user reviews (10 of 242)

All indexed reviews: https://appshunter.io/ios/app/sudoku-classic-brain-puzzle/id6444699070/reviews.md

### 5/5 — Virginia

*2026-03-31, version 1.36*

Really enjoy this game and play way too much!!   Thank you!

### 5/5 — Too Many

*2025-12-26, version 1.34*

Love the puzzles, just TOO MANY ADS!! Too hard to get out of the ad & back to your game. I prefer the small amount for buyout of ads.

### 1/5 — Inappropriate advertising

*2025-10-16, version 1.32*

The game is okay.  The underwear ads are too much!!

### 1/5 — To many AD

*2025-08-18, version 1.29*

There are too many ads in the free version. I understand that it is necessary for the developer to have money. But this much is too much.

### 5/5 — Great

*2025-08-09, version 1.28*

Love it!

### 4/5 — Suggestions

*2025-06-06, version 1.26*

Good sudoku app with multiple difficulty levels, daily challenges, 16x16 puzzles, etc. The frustrating thing is that the app doesn’t “remember me”.  Every time I open the app, it asks me again if I’m new to sudoku or more experienced. If I had to stop in the middle of a puzzle, my progress on that puzzle is gone and I have to start a new one. I get a new personal high score every time I play because it doesn’t remember my previous games. If this was fixed, I would LOVE this app!! Also, I would like the home page when I open the app (instead of the app automatically starting a new puzzle for me) so that I can actually access the menu, and choose what type of puzzle I want to play.

### 1/5 — Sudoku classic

*2025-05-27, version 1.26*

Hate this version. Liked the old version where you can accumulate auto notes and hints. This version is awful

### 5/5 — Sudoku

*2025-05-21, version 1.26*

This is addictive! I could do these all day ! Really challenging and great fun. Think I’ll try the next level once in a while! Tried the HARD level . Took a little more time , but still fun!! I Hope that everyone else finds out just how enjoyable and challenging these are! I have been doing these games for a few years and still enjoy the challenge! Still enjoying after several years! The HARD ones are much more difficult than the others, but still fun and challenging!! My favorite game of all time!!Love it! Thanks to the clever people who designed the game and made it challenging as well as fun! I play it at least three times a day!! By the way, I’m 82 years old and still like to do all sorts of puzzles and games, especially the ones with numbers!! Sudoku was a new one to me just a few years ago!If you haven’t tried Sudoku yet, put it on your agenda! You won’t regret it!! Have never found a game or challenge that has kept me interested so long! I will continue to play this game until it shuts down ! If that ever happens, I’ll be very disappointed!!!!Still my absolute favorite game of all times!!

### 5/5 — Sudoku

*2025-05-16*

This is addictive! I could do these all day ! Really challenging and great fun. Think I’ll try the next level once in a while! Tried the HARD level . Took a little more time , but still fun!! I Hope that everyone else finds out just how enjoyable and challenging these are! I have been doing these games for a few years and still enjoy the challenge! Still enjoying after several years! The HARD ones are much more difficult than the others, but still fun and challenging!! My favorite game of all time!!Love it! Thanks to the clever people who designed the game and made it challenging as well as fun! I play it at least three times a day!! By the way, I’m 82 years old and still like to do all sorts of puzzles and games, especially the ones with numbers!! Sudoku was a new one to me just a few years ago!If you haven’t tried Sudoku yet, put it on your agenda! You won’t regret it!! Have never found a game or challenge that has kept me interested so long! I will continue to play this game until it shuts down ! If that ever happens, I’ll be very disappointed!!!!

**Developer response:** It is delightful to hear such positive words and it’s always a pleasure to serve our users. Have a great day!

### 1/5 — Too many ads

*2025-05-10, version 1.25*

To play a game you have an ad win the game you have an ad. Then another ad to play another game. Too much

## Frequently asked questions about Sudoku Classic Brain Puzzle

### What is Sudoku Classic Brain Puzzle?

Sudoku Classic Brain Puzzle is a free, addictive logic-based board game where players fill a 9x9 grid with numbers 1-9. The goal is to ensure each row, column, and 3x3 area contains each number exactly once. It's designed to train your brain, improve logical thinking, and sharpen memory.

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

The app offers a variety of difficulty levels, from 6x6 to 16x16 grids, and thousands of puzzles. It includes daily challenges, intelligent hints to help when stuck, unlimited undo and eraser options, and useful statistics to track progress. You can also use pencil marks and auto notes.

### Is Sudoku Classic Brain Puzzle free to play?

Yes, the game is free to download and play, offering an offline experience. It does include in-app purchases and advertisements, which can be removed or utilized for additional features or content.

### Who is this app for?

This app is suitable for everyone, whether you are a beginner learning Sudoku or an advanced player seeking a challenge. It's ideal for those who enjoy logic puzzles, want to improve their cognitive skills, or are looking for a relaxing yet mentally stimulating game.

### How do I play Sudoku?

To play, you fill a 9x9 grid with numbers from 1 to 9. Each row, each column, and each of the nine 3x3 subgrids must contain all of the digits from 1 to 9. The app provides clues to get you started, and you can use deduction to solve the puzzle. Beginners can follow the tutorial to learn the basics.

## Version history (last 5 releases)

### 1.43 — 2026-08-17

Optimized the game experience.

### 1.42 — 2026-08-03

Optimized the game experience.

### 1.41 — 2026-07-10

Optimized the game experience.

### 1.40 — 2026-06-22

Add more game levels.

### 1.39 — 2026-05-28

Optimized the game experience.

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## More apps by TOKYO KYOKUJOY LLC

- [Color Rings Matching Puzzle](https://appshunter.io/ios/app/color-rings-matching-puzzle/id1662790244)
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All apps by TOKYO KYOKUJOY LLC: https://appshunter.io/developer/1652472542

## Related topics

[sudoku 16x16](https://appshunter.io/ios/topics/sudoku-16x16) · [sudoku 16x16 game](https://appshunter.io/ios/topics/sudoku-16x16-game) · [sudoku classic brain puzzle](https://appshunter.io/ios/topics/sudoku-classic-brain-puzzle) · [sudoku 16x16 monster](https://appshunter.io/ios/topics/sudoku-16x16-monster) · [tokyo game](https://appshunter.io/ios/topics/tokyo-game)

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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 2026-09-08.*