# SUDOKU.Studio — 5000 sudoku puzzles

> A Sudoku puzzle game with adjustable difficulty, hints, and daily challenges. (iPhone/iPad app by Works Inc..)

- Source: https://appshunter.io/ios/app/sudokustudio/id1464307870 (this page in markdown: same URL + `.md`)
- Developer: [Works Inc.](https://appshunter.io/developer/1276087920)
- Category: Games, Board, Puzzle
- Price: Free with in-app purchases
- Rating: 3.00/5 from 2 App Store ratings · 12 written reviews indexed
- Age rating: 12+
- Requires: iOS 15.0 · 156 MB
- Languages: Korean, German (Germany), European Spanish, American English, Japanese, Chinese (Simplified, China), Chinese (Traditional, Taiwan), French (France)
- Released: 2019-11-05
- Data updated: 2026-08-18
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/sudokustudio/id1464307870/reviews.md

## What is SUDOKU.Studio?

Regardless of whether you are a beginner or an expert at Sudoku, you will be able to select a difficulty that best suits your skill level. 

The “Hint” function is available on all Sudoku puzzles whenever you get stuck.


All Sudoku puzzles can be solved logically. There are no puzzles that require using proof by reduction to solve.
In addition, as you can input numbers by either selecting the cell first or the number first, you will be able to enjoy the puzzles without much hassle. 

You can solve one Sudoku puzzle each day by completing the daily challenges.
Solve all monthly puzzles to get different emblems every month.
As you can also attempt Sudoku puzzles challenges and puzzles from the past, you can collect up to 12 different emblems every year.

・There are 6 difficulty levels ranging from Beginner to Challenge.
・There are detailed explanations, complete with illustrations, on all solving methods ranging from Hidden Single to X-Wing.
・All puzzles come with a “Hint” function.
・There is a function that allows you to enter all candidate numbers at once.
・There is a function that allows you to delete all candidate numbers at once.
・There is also a “Hide ads” function (paid), if you do not wish to see any ads.
・You can also check for mistakes with just a simple tap of a button. Incorrect numbers will be displayed in red.
・You can choose whether to highlight duplicate numbers.
・You can choose whether to highlight the block, row and column of the selected cell.
・There is also an “Eraser” function.
・There is a function to undo each step, and another function to start over from the beginning.
・There is also an auto-save function. Even if you quit the puzzle mid-way, you will be able to continue where you left off anytime.
・As there is a time display function, you can attempt to beat your personal record as many times as you wish.

Enjoy Sudoku anytime, anywhere.

## Key features

- Adjustable difficulty levels
- Hint function
- Daily challenges with emblems
- Candidate number entry
- Mistake checking
- Auto-save function
- Time display

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 広告非表示 | $7.99 | one-time |


## Recent user reviews (10 of 12)

All indexed reviews: https://appshunter.io/ios/app/sudokustudio/id1464307870/reviews.md

### 1/5 — 広告が長過ぎる

*2026-03-03, version 1.6.4*

なかなか終わらず、イライラしてしまいます。 
 ナンプレの解き方をタップしたが、それぞれの項目で、タップが効きにくい。ちゃんと反応してほしい。IPadOS 15.8.6で使用しています。

### 1/5 — 起動しなくなった

*2022-03-17, version 1.43*

ver.1.43になってから、起動しないか起動しても操作を受け付けなくなってしまった。
他のアプリより操作もしやすく、解き方のテクニックなども教えてくれるので気に入っていただけに残念。
早く修正されることを望みます。

### 3/5 — 割といいアプリです。

*2021-01-30, version 1.34*

基本的に一問終わるごとに広告が入りますが、
Wi-Fiやモバイル通信を切れば問題ないです。
無料なので広告は仕方ないかと思います。

また、問題の解き始め数秒くらい操作できず固まります。ただ、数秒放置すれば操作できるようになります。

運営さんへのお願い(アプリの問題修正)

現在、iPhoneXs(iOS14.4)でこのアプリを使用しています。
アプリを立ち上げコントロールセンターやホームに戻る操作などアプリを中断すると、強制的にアプリが落ちます。
それまでプレイしていた問題のデータが全て消え、最初からになってしまいます。
iPhoneの再起動、Wi-Fiやモバイル通信のオンオフ関係なく、個人では対処法が見つかりませんでした。
毎回この挙動を今でもします。

強制的にアプリが落ちる問題はぜひ修正していただきたいです。可能であれば、問題開始時のフリーズも直してください。

いつもこのアプリのおかげで楽しい時間を過ごせています。
これからも引き続きプレイしたいので、修正をよろしくお願いします。

追記　1月31日
バージョン1.34で以上のバグがすべて修正されました。快適に遊べています。
運営さんありがとうございました。

### 4/5 — 楽しい

*2021-01-07, version 1.32*

やりやすいです。今まで遊んだ中で1番かも…ただ数字入力が、出来ない時が、たまにあるのが、弱点。でも、続けて同じ数字を入れる時楽です、他では、経験無いから凄く良い。

### 3/5 — デイリーができない

*2020-12-29, version 1.31*

デイリーをやろうとすると必ずアプリが落ちます。なのでこの評価。アプリ自体は悪くないと思いますが、レビュー見てる限りどうやらバグ多そうなので無料でできるアプリは他にたくさんあるし、わざわざ入れる必要はないかな〜ぐらい

### 2/5 — デイリーチャレンジができない

*2020-12-29, version 1.31*

デイリーチャレンジをしようとするとアプリが落ちてしまいます。

### 1/5 — デイリーチャレンジ

*2020-12-29, version 1.31*

開けると落ちる
デイリーチャレンジできない

### 2/5 — 端っこが見れない

*2020-12-24, version 1.29*

iphoneX ios14.2 画面表示に収まりきらず、端っこの数字が見れない。設定も見たがあまり労力かける気にならないので削除します。操作性は良かったので星2。

### 5/5 — 問題のクオリティが高い！

*2020-10-13, version 1.26*

数字のレイアウトがとても美しくて、解いていてとても新鮮な楽しさを感じさせてくれます。
効果音もとても可愛いくて💕
つい長い時間プレイしてしまいます。

### 1/5 — 広告が酷い

*2020-09-04, version 1.22*

子どもの脳トレになればと思ってダウンロードしたけど、間に表示される広告が戦国武将との恋愛シミュレーションゲーム。とてもじゃないが、小学生に見せるものじゃない。

## Frequently asked questions about SUDOKU.Studio

### What difficulty levels does SUDOKU.Studio offer?

SUDOKU.Studio provides six distinct difficulty levels, ranging from 'Beginner' to 'Challenge', catering to a wide spectrum of player skills.

### Does SUDOKU.Studio have a hint system?

Yes, SUDOKU.Studio features a 'Hint' function that is available for all Sudoku puzzles, assisting players when they encounter difficulties.

### How does SUDOKU.Studio handle mistakes?

Players can check for mistakes with a simple tap, and incorrect numbers will be highlighted in red. There is also an 'Eraser' function for corrections.

### Can I continue a Sudoku puzzle if I quit midway?

Yes, SUDOKU.Studio includes an auto-save function, allowing you to continue any puzzle from where you left off, even after quitting the app.

### Does SUDOKU.Studio have ads?

Yes, SUDOKU.Studio contains advertisements. There is an option to 'Hide ads' through a paid in-app purchase.

### What is the rating for SUDOKU.Studio?

SUDOKU.Studio has a rating of 3.0 stars based on 2 user reviews.

### How often is SUDOKU.Studio updated?

The latest version of SUDOKU.Studio is 1.6.6, and it was last updated on May 29, 2026.

### Is SUDOKU.Studio suitable for younger players?

SUDOKU.Studio has an age rating of 12+, indicating it is intended for users aged 12 and older.

## Version history (last 5 releases)

### 1.6.7 — 2026-07-28

Fixed minor bugs.

### 1.6.6 — 2026-05-29

Fixed minor bugs.

### 1.6.5 — 2026-05-07

Fixed minor bugs.

### 1.6.4 — 2026-01-24

Fixed minor bugs.

### 1.6.3 — 2025-12-13

Fixed minor bugs.

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## More apps by Works Inc.

- [SUDOKU - 5700 original puzzles](https://appshunter.io/ios/app/sudoku-5700-original-puzzles/id1276087921)
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- [Picture Book Escape Game](https://appshunter.io/ios/app/picture-book-escape-game/id1445817025)

All apps by Works Inc.: https://appshunter.io/developer/1276087920

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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 2026-08-18.*