# A-tube 数独 — 数独

> Free, ad-free classic Sudoku game with multiple difficulty levels and leaderboards. (iPhone/iPad app by 真 陆.)

- Source: https://appshunter.io/ios/app/a-tube/id6789603052 (this page in markdown: same URL + `.md`)
- Developer: [真 陆](https://appshunter.io/developer/6787729976)
- Category: Games, Entertainment, Casual, Puzzle
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 17.0 · 4 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2026-07-16
- Data updated: 2026-10-15
- Monetization: free

## What is A?

A-tube Sudoku is a classic Sudoku game that is completely free, with no advertisements and no in-app purchases.

Choose from three difficulty levels: Beginner, Advanced, and Expert. You can also switch between the Tile Board and Minimal Board styles. The game features large numbers and clear 3×3 grid boundaries, optimized for touch controls on both iPhone and iPad.

The rules are straightforward: you may continue the challenge after your first three mistakes. After the fourth mistake, your score is frozen, but you can still complete the puzzle. Beginner difficulty includes an Undo feature, while Advanced and Expert offer a greater challenge.

The local leaderboard records scores on the current device. The online leaderboard displays rankings with public nicknames and scores. No password is required—simply enter a nickname to start playing.

## Key features

- Three difficulty levels
- Two board styles
- Undo feature
- Local leaderboard
- Online leaderboard
- Optimized for touch

## Is A safe?

Not enough ratings yet to assess A.

## Is A legit?

A-tube 数独 appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for A is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Frequently asked questions about A

### Does A-tube Sudoku have ads?

No, A-tube Sudoku is completely free with no advertisements. This allows for an uninterrupted puzzle-solving experience.

### Can I play A-tube Sudoku offline?

Yes, A-tube Sudoku can be played offline. The local leaderboard feature allows you to track your scores on your device without an internet connection.

### What are the difficulty levels in A-tube Sudoku?

A-tube Sudoku offers three difficulty levels: Beginner, Advanced, and Expert. This allows players of all skill levels to enjoy the game.

### How does the mistake system work in A-tube Sudoku?

You can continue playing after your first three mistakes. After the fourth mistake, your score is frozen, but you can still complete the puzzle.

### Is A-tube Sudoku available on multiple devices?

Yes, A-tube Sudoku is optimized for both iPhone and iPad, offering a seamless experience across Apple devices.

### How often is A-tube Sudoku updated?

The latest version, 1.3, was released on August 8, 2026, indicating recent development and support for the game.

### What is the age rating for A-tube Sudoku?

A-tube Sudoku has an age rating of 4+, making it suitable for a wide range of players.

### Does A-tube Sudoku have in-app purchases?

No, A-tube Sudoku is completely free and does not feature any in-app purchases, ensuring all content is accessible without additional cost.

## Version history (last 4 releases)

### 1.3 — 2026-08-08

• Added English support alongside Simplified Chinese.
• Refined the interface and layouts for iPhone and iPad.
• Improved the player profile, difficulty selection, leaderboard, and settings screens.
• Enhanced the appearance of the board, number keys, and game controls.
• Added encouraging completion feedback, including your score and player percentile.
• Fixed known issues and improved overall stability.

### 1.2 — 2026-07-20

优化 iPhone / iPad 游戏界面与视觉布局，提升数独棋盘和数字选择区的使用体验。

完善防沉迷规则，提升游戏体验稳定性。

### 1.1 — 2026-07-18

优化了数独界面，修复了部分已知问题。

### 1.0 — 2026-07-16

No release notes.

## Apps similar to A

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Box Box - Push box puzzle](https://appshunter.io/ios/app/box-box-push-box-puzzle/id1464632410) | 4.6 (5) | Free | Games |
| [Bowling Crew — 3D Sport Game](https://appshunter.io/ios/app/bowling-crew-3d-sport-game/id1490240246) | 4.8 (98,233) | Free | Games |
| [Snake '97: retro phone classic](https://appshunter.io/ios/app/snake-97-retro-phone-classic/id438052745) | 4.7 (3,952) | Free | Games |

## More apps by 真 陆

- [泳鉴](https://appshunter.io/ios/app/id6801747400)
- [A-tube 帮帮 - 家人远程协助](https://appshunter.io/ios/app/a-tube/id6808272939)

All apps by 真 陆: https://appshunter.io/developer/6787729976

---

*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 2026-10-15.*