# Sudoku ++ vs Challenge! Sudoku

Sudoku ++ and Challenge! Sudoku both sit at 5.0 stars, but that hides the real split: 100% of Challenge! Sudoku's written reviews are positive against 12% of Sudoku ++'s. Challenge! Sudoku also leads on in-app purchases (none vs 1) and update cadence (every 2 days vs weekly). Sudoku ++'s advantage is device support (4 vs 2). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Sudoku ++ sells 1 one-off in-app purchase. Challenge! Sudoku asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Sudoku ++ against 5.0 for Challenge! Sudoku. Both are backed by a comparable volume of ratings — 4 and 2 respectively. Written reviews are what separate them: 12% of Sudoku ++'s written reviews are positive against 100% of Challenge! Sudoku's.

Sudoku ++ ships an update weekly, Challenge! Sudoku every 2 days. The most recent releases landed on October 23, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Sudoku ++ | Challenge! Sudoku |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/sudoku-plus-plus/id1383809939/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/challenge-sudoku-classic-game/id6468818921/reviews) |
| Number of ratings | **4** | 2 |
| Positive reviews | 11.9% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | **Every 2 days** |
| Monetization | Freemium | **Free** |
| Size | 35 MB | 58 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [VM Mobile Team](https://appshunter.io/developer/646128457) | [kyulabs](https://appshunter.io/developer/1380867471) |

## What reviewers say

### Sudoku ++

[App page](https://appshunter.io/ios/app/sudoku-plus-plus/id1383809939)

Engage your logic with a classic 9x9 puzzle experience. This app offers multiple difficulty levels, fast note-taking, and helpful hints. Track your progress with detailed statistics and customize your play with various themes. Enjoy a calm and satisfying number puzzle every time.

**Highlights:** Classic 9x9 Sudoku puzzles, Multiple difficulty levels, Fast note-taking and pencil marks, Highlighting for rows, columns, and numbers, Undo, redo, and erase functions, Hint system and mistake checking, Progress tracking statistics, Customizable themes

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $4.99 | one-time |


### Challenge! Sudoku

[App page](https://appshunter.io/ios/app/challenge-sudoku-classic-game/id6468818921)

Engage in classic Sudoku puzzles with a competitive edge. Challenge players globally and locally to achieve top rankings on leaderboards. Customize difficulty levels to suit your skill, from beginner to expert.

**Highlights:** Global ranking system, Compete with friends, Multiple difficulty levels, User-friendly interface, Record sharing

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

**In-app purchases:** none


## Frequently asked questions

### Is Sudoku ++ free?

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

### Is Challenge! Sudoku free?

Challenge! Sudoku is free to download, with no in-app purchases.

### Which has better reviews, Sudoku ++ or Challenge! Sudoku?

Sudoku ++ and Challenge! Sudoku are both rated 5.0 out of 5 on the App Store, from 4 and 2 ratings respectively.

### Do Sudoku ++ or Challenge! Sudoku have ads?

Neither Sudoku ++ nor Challenge! Sudoku shows ads.

### Which is updated more often, Sudoku ++ or Challenge! Sudoku?

Sudoku ++ ships an update weekly, and Challenge! Sudoku every 2 days. Most recently, Sudoku ++ was updated on October 23, 2026 and Challenge! Sudoku on October 17, 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.*