# Sudoku | Keep your mind sharp! vs Solitaire World

The clearest difference is rating: Sudoku | Keep your mind sharp! at 4.7 against Solitaire World's 3.0. Sudoku | Keep your mind sharp! also leads on review sentiment (67% vs 33%) and ratings volume (226 vs 8). Solitaire World's advantage is ads (none vs shown) and iOS requirement (12.0 vs 15.0). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. Sudoku | Keep your mind sharp! sells 2 in-app purchases, starting at $0.99 per month and Solitaire World sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Sudoku | Keep your mind sharp! holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: Sudoku | Keep your mind sharp! has 226 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 67% of Sudoku | Keep your mind sharp!'s written reviews are positive against 33% of Solitaire World's.

Sudoku | Keep your mind sharp! ships an update every 5 weeks, Solitaire World every 3 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | Sudoku | Keep your mind sharp! | Solitaire World |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (226 ratings)](https://appshunter.io/ios/app/sudoku-keep-your-mind-sharp/id1483114958/reviews)** | [3.0 (8 ratings)](https://appshunter.io/ios/app/solitaire-world-win-cash/id1672495119/reviews) |
| Number of ratings | **226** | 8 |
| Positive reviews | **66.7% of reviews** | 33.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 186 MB | 218 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Loyal Foundry, Inc.](https://appshunter.io/developer/1620612434) | [GameNexa Studios Private Limited](https://appshunter.io/developer/1400304840) |

## What reviewers say

### Sudoku | Keep your mind sharp!

[App page](https://appshunter.io/ios/app/sudoku-keep-your-mind-sharp/id1483114958)

Engage in the classic numbers game with thousands of free Sudoku puzzles. Suitable for all skill levels, this app offers features to help you relax, sharpen your mind, and track your progress. Enjoy customizable themes and unlimited hints for a seamless puzzle experience.

**Highlights:** Thousands of free puzzles, Note-taking feature, Customizable themes, Multiple difficulty levels, Statistics tracking, Unlimited hints, Cell, row, and column highlighting

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $0.99 | per month |
| Sudoku Remove Ads | $3.99 | one-time |


### Solitaire World

[App page](https://appshunter.io/ios/app/solitaire-world-win-cash/id1672495119)

Enjoy a classic card game with a modern twist, featuring beautiful design, multiple game modes, and customization options. Compete against others, track your progress, and unlock achievements. Players can also earn real cash for wins and high scores.

**Highlights:** Classic Spider Solitaire gameplay, Earn real cash for wins, Multiple game modes, Beautiful design and animations, Customization options, Achievements and rewards, Compete against other players

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Everything for Free | Free | one-time |
| Unlock Everything Discount | $12.99 | one-time |
| Unlock Everything | $49.99 | one-time |


## Frequently asked questions

### Is Sudoku | Keep your mind sharp! free?

Sudoku | Keep your mind sharp! is free to download, with in-app purchases available.

### Is Solitaire World free?

Solitaire World is free to download, with in-app purchases available.

### Which has better reviews, Sudoku | Keep your mind sharp! or Solitaire World?

Sudoku | Keep your mind sharp! is rated higher. Sudoku | Keep your mind sharp! averages 4.7 out of 5 from 226 ratings, while Solitaire World averages 3.0 from 8 ratings.

### Do Sudoku | Keep your mind sharp! or Solitaire World have ads?

Sudoku | Keep your mind sharp! shows ads; Solitaire World does not.

### Which is updated more often, Sudoku | Keep your mind sharp! or Solitaire World?

Sudoku | Keep your mind sharp! ships an update every 5 weeks, and Solitaire World every 3 weeks. Most recently, Sudoku | Keep your mind sharp! was updated on November 3, 2026 and Solitaire World on November 3, 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.*