# Sudoku· — High Quality Sudoku Cards

> Classic Sudoku puzzle game with daily challenges and multiple difficulty levels. (iPhone/iPad app by Tim O's Studios, LLC.)

- Source: https://appshunter.io/ios/app/sudoku/id839681682 (this page in markdown: same URL + `.md`)
- Developer: [Tim O's Studios, LLC](https://appshunter.io/developer/412839685)
- Category: Games, Entertainment, Family, Puzzle
- Price: Free
- Rating: 4.70/5 from 17,294 App Store ratings · 322 written reviews indexed
- Age rating: 4+
- Requires: iOS 13 · 42 MB
- Languages: Russian, Vietnamese, American English, Dutch, Greek, Danish, Indonesian, European Spanish, Italian, Catalan and 14 more
- Released: 2014-03-28
- Data updated: 2026-08-31
- Monetization: ad-supported
- User reviews in markdown: https://appshunter.io/ios/app/sudoku/id839681682/reviews.md

## What is Sudoku·?

Pass the time while you challenge your mind with this classic Sudoku game.  The clean, simple layout makes it easy to play for hours at a time.

The objective is simple, fill the 9×9 grid with digits so that each column, row, and the nine 3×3 sub-grids contains all of the digits from 1 to 9.

Sudoku· features:
- Daily Challenge
- Four levels (easy, medium, hard, and expert)
- Disable numbers once all 9 instances are entered
- Note taking ability
- Hint (fill in missing number when you are stuck)
- Highlight Incorrect Values
- Auto Reveal all potential notes
- Individual statistics
- Game Center with Leaderboard and Achievements

Download today for mind-challenging fun.

## Key features

- Daily Challenge
- Multiple difficulty levels
- Note taking
- Hint system
- Highlight incorrect values
- Individual statistics
- Game Center leaderboard

## What do users think of Sudoku·?

Overall sentiment: positive

**Pros**

- ⭐ Excellent sudoku game
- 👍 Easy to use and understand
- 🧠 Helps exercise the brain
- 💤 Relaxing and calming

**Cons**

- 🙄 Excessive ads and interruptions
- ⏱️ Ads affect game timer
- 🔇 Cannot mute or control audio
- 🐛 Bugs and crashes

**Commonly reported bugs**

- Game freezes or crashes after updates
- Timer issues due to ads
- Difficulty closing ads or navigating UI
- Incompatibility with newer devices

**Most requested features**

- Option to pay for ad-free version
- Ability to pause and restart games
- More detailed performance tracking
- Customizable color themes

## Recent user reviews (10 of 322)

All indexed reviews: https://appshunter.io/ios/app/sudoku/id839681682/reviews.md

### 5/5 — Brilliant app!

*2026-08-09, version 4.1*

Really enjoyed playing this app simple and straightforward to use, and free!

### 5/5 — Ok, but ads are a pain

*2026-05-03*

I love the simplicity of the app, but having to click on the adds and be taken to the App Store just to continue the game takes up so much time. I’m sorry, but I am uninstalling

### 4/5 — Tap tap tap-out

*2026-04-03*

Great game
Nice graphics 
Non-optional sound effects a deal breaker

### 1/5 — Ruined by Ads

*2026-03-11, version 4.1*

I’ve played this game for years and enjoyed it. However the intro of ads has ruined it. It can take longer to watch the ads than play the game. Also there are increasing numbers of scam ads that can be impossible to close. I’m deleting the app with a tear in my eye

### 5/5 — Swap for more

*2026-02-28*

Played three games. Then a suggestion to upgrade to 2025 version. Then in app purchase situation popped up. Could not back out to old for free. Solution, deleted app.

### 5/5 — Keeps crashing

*2026-02-24*

Like the game as it’s not too hard so can be done in 25 minutes tops. But recently keeps crashing and I have to reinstall

### 5/5 — Ms Weiss

*2026-02-23, version 4.1*

Nice to play mistakes shown straight away

### 5/5 — Too many pop up add

*2026-02-13*

Very good to play  with some really helpful features .
However there appear to be too many pop up adds that block the screen for long periods of time- over 15 minutes. I have had to delete the app a few times. 
Any response from app owner?

### 3/5 — The new version of Sudoku adverts are obtrusive!

*2026-02-04, version 4.1*

The time starting before the adverts stop was fixed but 'Unity ads' advertisements go on & on way too long! It is best on an older software version on another tablet. It was a 5* rating but not now.

### 5/5 — Works great

*2026-01-21, version 4.1*

Love it

## Frequently asked questions about Sudoku·

### What is this app?

This app is a classic Sudoku puzzle game designed to challenge your mind. It features a clean and simple layout for easy gameplay. The objective is to fill a 9x9 grid with digits so that each column, row, and 3x3 sub-grid contains all digits from 1 to 9.

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

Key features include a Daily Challenge, four difficulty levels (easy, medium, hard, expert), the ability to disable numbers once all instances are entered, note-taking, a hint system, highlighting incorrect values, auto-reveal of potential notes, individual statistics, and Game Center integration with leaderboards and achievements.

### Is this app free to download and play?

Yes, the app is free to download and play. It is supported by advertisements, which are displayed within the application.

### What devices is this app compatible with?

While specific device compatibility is not detailed, Sudoku games of this nature are typically designed for smartphones and tablets running iOS or Android operating systems.

### How can this app help me?

This app can help you pass the time while challenging your mind. It's a great way to improve your logic and problem-solving skills through engaging puzzles. The various difficulty levels allow you to gradually increase the challenge as you improve.

## Version history (last 5 releases)

### 4.1 — 2025-10-27

-Bug Fixes

### 4.0 — 2022-02-14

-Bug Fixes

### 3.23 — 2021-05-12

-Bug Fixes

### 3.22 — 2021-03-25

-Bug Fixes

### 3.21 — 2021-01-14

-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· Classic Puzzle Games](https://appshunter.io/ios/app/sudoku-classic-puzzle-games/id1409781798) | 4.7 (63,544) | Free | Games |
| [Sudoku ▦](https://appshunter.io/ios/app/sudoku/id1407780576) | 4.7 (104,108) | Free | Games |
| [Sudoku Quest - Puzzle Games](https://appshunter.io/ios/app/sudoku-quest-puzzle-games/id671755288) | 4.7 (1,852) | Free | Games |
| [Sudoku Joy: Number Master Game](https://appshunter.io/ios/app/sudoku-joy-number-master-game/id1460985516) | 4.9 (738) | Free | Games |
| [Sudoku.com - Number Games](https://appshunter.io/ios/app/sudokucom-number-games/id1193508329) | 4.8 (1,847,599) | Free | Games |

## More apps by Tim O's Studios, LLC

- [Rocket Quest Lite](https://appshunter.io/ios/app/rocket-quest-lite/id478635438)
- [Calculator‰](https://appshunter.io/ios/app/calculator/id486645049)
- [Flashlight - Night Light Clock](https://appshunter.io/ios/app/flashlight-night-light-clock/id493794012)
- [Level-](https://appshunter.io/ios/app/level/id498652631)
- [Stopwatch‰](https://appshunter.io/ios/app/stopwatch/id505889167)
- [Stopwatch%](https://appshunter.io/ios/app/stopwatch/id505896404)

All apps by Tim O's Studios, LLC: https://appshunter.io/developer/412839685

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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 2026-08-31.*