# Sudoku - Logical Brain Puzzle — Simple but you'll be addicted.

> Classic number-placement logic puzzle game with daily challenges. (iPhone/iPad app by Shunichi Todoroki.)

- Source: https://appshunter.io/ios/app/sudoku-logical-brain-puzzle/id1503337593 (this page in markdown: same URL + `.md`)
- Developer: [Shunichi Todoroki](https://appshunter.io/developer/1266640763)
- Category: Games, Health & Fitness, Casual, Puzzle
- Price: Free
- Rating: 5.00/5 from 2 App Store ratings · 8 written reviews indexed
- Age rating: 17+
- Requires: iOS 13.0 · 25 MB
- Languages: American English, Japanese
- Released: 2020-03-21
- Data updated: 2026-08-16
- Monetization: ad-supported
- User reviews in markdown: https://appshunter.io/ios/app/sudoku-logical-brain-puzzle/id1503337593/reviews.md

## What is Sudoku?

Sudoku puzzles that 200 million people in more than 100 countries are enthusiastic about.
** More than 16,000 problems, being added sequentially. **
** New Features Added **
 Added "Daily Challenge" function.
Each day you will be presented with a different level of questions.
Click on the "Daily" button in the middle of the bottom of the screen to take the challenge.

Simple intellectual puzzle that is loved for a long time. Anyone can easily play. Because there are only next 3 rules.

Sudoku Rules
1. Each row contains a number from 1 to 9 one by one. In other words, Two or more of the same numbers cannot be on the same row.
2. Each column contains a number from 1 to 9 one by one. In other words, Two or more of the same numbers cannot be on the same column.
3. Each of the 3 × 3 blocks contains a number from 1 to 9 one by one. In other words, Two or more of the same numbers cannot be on the same block.
See how easy it is.
If you try it, you will know more.

But once you start playing the puzzles, it doesn't stop.
There are not so many simple and deep puzzles. Possibility of problem is 6,670,903,752,021,072,936,960 ways. (66 trillion!! What?)
There have been reports of improving the working memory of the elderly.
There is no doubt that it will add pleasure to your life.

More and more new problems will be added.
We will also add rare problems and functions that are not found elsewhere.
Please play by all means.

Let me know if the translation is strange.

-- How to play --

Enter numbers so that they do not enter the same numbers in the same column, row, or block.
If you can enter numbers in all 81 Cells, you are done.

-- How to operate --

How to enter numbers
- Select the cell you want to input and press the number button.

How to enter numbers consecutively
- Press and hold the button of the number you want to input continuously.
- A "pin" mark is added to the number.
- Tap the cell where you want to enter a number.
- You can also enter note numbers continuously.
- You can enter numbers in multiple adjacent cells by sliding your finger.

How to delete entered number
- Select the cell with the number you want to erase and press thesame number  button .
- Or press the "Erase" button (trash can icon) below the number buttons.
- Hint numbers cannot be erased

Undo function
- If you push the back button, you will go back to the previous state.

How to use the memo function
- By entering a temporary memo number, it will help you find the answer.
- Turn on the “Memo” button (pen icon), then perform the same operation as entering numbers.

How to use the Auto note function
- When you press the auto note button, notes are automatically entered in all the cells for which no numbers are currently entered.
- Note is entered excluding the numbers entered in the same row / column / block.

How to use the answer function
- If you do not know the answer, select the cell you want to know the answer and press the "answer" button (heart icon).

## Key features

- Over 16,000 puzzles
- Daily Challenge mode
- Intuitive controls
- Memo and auto-note functions
- Undo and hint options
- Improves working memory

## Recent user reviews (8 of 8)

All indexed reviews: https://appshunter.io/ios/app/sudoku-logical-brain-puzzle/id1503337593/reviews.md

### 1/5 — ダメでした

*2023-05-18*

初期設定のまま数時間、ゲームを始める事すら出来ない。何とかして

### 5/5 — 当たる

*2021-03-30*

本当に当たりました。ありがとうございます！
ナンプレは日によって難易度が変わります。
ですが、難しい場合には一括メモ機能という素晴らしい機能がついているのサクサク進められます。
ナンプレ初心者にもおすすめです！

**Developer response:** 丁寧なレビューありがとうございます。
これを励みに使いやすく楽しいアプリを目指して頑張っていきます。

### 5/5 — 今ならまだ人数少ないから当たるチャンス高め！！

*2021-03-22*

毎日5分ぐらい空いた時間に遊ぶだけで応募できる( ੭ु•ω•)੭ु自分も当たりました( ˊᵕˋ )また当たるといいな〜

**Developer response:** レビューありがとうございます。また当たりますようお祈りしています。

### 5/5 — 本当に当選しました

*2021-03-22*

こういった懸賞アプリ系で当選した試しがないため半信半疑でしたが、実際に当選してギフト券を頂けてびっくりしたので、思わずレビューしてしまいました。
金曜日に当選連絡が来て、月曜日にプレゼン受取という迅速なご対応も信頼できる点だと思いました。
元々数独が好きで始めたアプリでしたが、操作性が他の数独アプリに比べてとても良いと感じています。これからも隙間時間を見つけて楽しませていただきたいです。
運営の方々、本当にありがとうございます。

**Developer response:** 丁寧なレビューありがとうございます。
これからもアプリ改善を続けていきますので、よろしくお願いします。

### 5/5 — アマギフ限定だけどマジでもらえた

*2021-03-04*

始めて最短2日でアマギフ1,000円頂きました！
詳しくはダウンロード！！

**Developer response:** レビューありがとうございました。
ナンプレを遊ぶだけでも楽しいので、どんどん遊んでどんどん応募してください。

### 5/5 — ありがとうございます

*2021-03-03*

Amazonギフト券当たりました。ありがとうございます。

**Developer response:** レビューありがとうございました。これからも改善して楽しく遊べるアプリにしていきますので、どんどんプレイして応募してください。

### 5/5 — ありがとう

*2021-02-21*

一回目の応募でAmazonギフト券が当たりました。

**Developer response:** レビューありがとうございます。
まだまだ応募者が少ないので、ドンドン応募してお楽しみ下さい。

### 5/5 — とても楽しい

*2020-07-13*

いい感じのレベルなのでとても楽しめます。早く達人級などを出来るようにして欲しいです。

**Developer response:** 評価していただき、ありがとうございます。
今回のアップデートで上級問題がリリースされました。
ぜひ遊んでみて下さい。

## Frequently asked questions about Sudoku

### What is Sudoku - Logical Brain Puzzle?

Sudoku - Logical Brain Puzzle is a free mobile game that offers a classic number-placement logic puzzle experience. It provides over 16,000 puzzles and a daily challenge to keep players engaged.

### How do I play Sudoku - Logical Brain Puzzle?

The objective is to fill a 9x9 grid with numbers so that each row, each column, and each of the nine 3x3 subgrids contain all of the digits from 1 to 9. You can enter numbers by selecting a cell and pressing the number button, or use the memo function for notes.

### Does Sudoku - Logical Brain Puzzle have ads?

Yes, Sudoku - Logical Brain Puzzle contains advertisements. These ads help support the game's development and allow it to remain free to play.

### Can I play Sudoku - Logical Brain Puzzle offline?

The provided data does not specify offline play capabilities. However, many puzzle games of this nature can be enjoyed without an internet connection once downloaded.

### What are the benefits of playing Sudoku - Logical Brain Puzzle?

Playing Sudoku is known to improve working memory, especially in the elderly. It also provides a mentally stimulating activity that can add pleasure to your life.

### How often are new puzzles added to Sudoku - Logical Brain Puzzle?

The app states that new problems are being added sequentially and that more and more new problems will be added. It also mentions adding rare problems and functions not found elsewhere.

### What devices is Sudoku - Logical Brain Puzzle available on?

Sudoku - Logical Brain Puzzle is available on iPhone and iPod. The age rating is 17+, suggesting it may have complex themes or content not suitable for younger players.

### Is there a way to undo mistakes in Sudoku - Logical Brain Puzzle?

Yes, Sudoku - Logical Brain Puzzle features an undo function. If you make a mistake, you can push the back button to return to the previous state.

## Version history (last 5 releases)

### 1.2.7 — 2021-03-31

bug fix

### 1.2.6 — 2021-03-08

bug fix

### 1.2.5 — 2021-03-07

minor fix

### 1.2.4 — 2021-03-02

bug fix

### 1.2.3 — 2021-02-17

Bug fixes

## Apps similar to Sudoku

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Sudoku - Daily Puzzles](https://appshunter.io/ios/app/sudoku-daily-puzzles/id1605842465) | 4.9 (6,062) | Free | Games |
| [Sudoku·](https://appshunter.io/ios/app/sudoku/id839681682) | 4.7 (17,289) | Free | Games |
| [Sudoku Color - Classic Puzzle!](https://appshunter.io/ios/app/sudoku-color-classic-puzzle/id1503221765) | 4.8 (34,525) | Free | Games |
| [Sudoku ∙ Classic Sudoku Games](https://appshunter.io/ios/app/sudoku-classic-sudoku-games/id1522685808) | 4.7 (23,030) | Free | Games |
| [Sudoku ▦](https://appshunter.io/ios/app/sudoku/id1407780576) | 4.7 (104,082) | Free | Games |
| [Sudoku Classic Brain Puzzle](https://appshunter.io/ios/app/sudoku-classic-brain-puzzle/id6444699070) | 4.8 (3,681) | Free | Games |

## More apps by Shunichi Todoroki

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All apps by Shunichi Todoroki: https://appshunter.io/developer/1266640763

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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 2026-08-16.*