# Killer Sudoku vs 3D Puzzle「VariableCube」

The clearest difference is in-app purchases: 3D Puzzle「VariableCube」 at none against Killer Sudoku's 4. 3D Puzzle「VariableCube」 also leads on update cadence (every 5 days vs every 5 weeks). Killer Sudoku's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 26.2). On price and ads there is nothing between them.

Both are free to download. Killer Sudoku sells 4 in-app purchases, starting at $2.99 per month. 3D Puzzle「VariableCube」 asks for nothing beyond the download.

Killer Sudoku ships an update every 5 weeks, 3D Puzzle「VariableCube」 every 5 days. The most recent releases landed on October 29, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Killer Sudoku | 3D Puzzle「VariableCube」 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (6.3K ratings)](https://appshunter.io/ios/app/killer-sudoku-puzzle-games/id1549645019/reviews)** | — |
| Number of ratings | **6.3K** | — |
| Positive reviews | 36.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 5 weeks | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 258 MB | 4 MB |
| Requires iOS | **13.0** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Guru Smart Holding Limited](https://appshunter.io/developer/1499790773) | [naohito fukunishi](https://appshunter.io/developer/1838068833) |

## What reviewers say

### Killer Sudoku

[App page](https://appshunter.io/ios/app/killer-sudoku-puzzle-games/id1549645019)

This logic puzzle game challenges players to fill a grid with numbers, ensuring sums within cages match designated totals. It offers various difficulty levels, helpful tools like notes and hints, and daily challenges for brain training.

**Highlights:** Cage sum logic puzzles, Multiple difficulty levels, Note-taking mode, Undo and hint functions, Daily challenges, Dark and color themes

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $2.99 | per month |
| 3 Months Subscription | $5.99 | per 3 months |
| Yearly Subscription | $14.99 | per year |
| Killer Sudoku Premium | $14.99 | one-time |

**What reviewers like**

- 👍 Fun game
- 👍 Appropriate difficulty levels
- 👍 Great challenges
- 👍 Killer edition and other editions
- 👍 Flashing box around singular numbers

**What reviewers complain about**

- 🐛 Randomly opening tracking pages
- 🔒 Security risk from suspicious URLs
- 💰 Greedy subscription model
- 🔍 Excessive ads
- 🐛 Notes feature issues

**Reported bugs**

- Randomly opening tracking pages
- Security risk from suspicious URLs
- Progress loss and erasing
- Freezing and crashing
- Bugs in latest updates

**Requested features**

- Bring back ability to do previous daily challenges
- Add landscape mode option
- Implement static banner ads
- Add auto-lock option
- Provide option to choose difficulty level in daily challenge


### 3D Puzzle「VariableCube」

[App page](https://appshunter.io/ios/app/3d-puzzlevariablecube/id6772635902)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Killer Sudoku free?

Killer Sudoku is free to download, with in-app purchases available.

### Is 3D Puzzle「VariableCube」 free?

3D Puzzle「VariableCube」 is free to download, with no in-app purchases.

### Do Killer Sudoku or 3D Puzzle「VariableCube」 have ads?

Both Killer Sudoku and 3D Puzzle「VariableCube」 show ads.

### Which is updated more often, Killer Sudoku or 3D Puzzle「VariableCube」?

Killer Sudoku ships an update every 5 weeks, and 3D Puzzle「VariableCube」 every 5 days. Most recently, Killer Sudoku was updated on October 29, 2026 and 3D Puzzle「VariableCube」 on October 8, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*