# Sudoku | Keep your mind sharp! vs ナンプレ京APP

The clearest difference is in-app purchases: ナンプレ京APP at none against Sudoku | Keep your mind sharp!'s 2. Sudoku | Keep your mind sharp!'s advantage is ratings volume (225 vs 3). On price, rating, review sentiment and update cadence 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. ナンプレ京APP asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.6 for Sudoku | Keep your mind sharp! against 4.7 for ナンプレ京APP. That said, the two scores are not equally well evidenced: Sudoku | Keep your mind sharp! has 225 ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 67% of Sudoku | Keep your mind sharp!'s written reviews are positive against 70% of ナンプレ京APP's.

Both ship on a similar rhythm, roughly every 5 weeks. The most recent releases landed on September 19, 2026 and July 8, 2026 respectively.

## The numbers

| Metric | Sudoku | Keep your mind sharp! | ナンプレ京APP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (225 ratings)](https://appshunter.io/ios/app/sudoku-keep-your-mind-sharp/id1483114958/reviews) | **[4.7 (3 ratings)](https://appshunter.io/ios/app/app/id1574331970/reviews)** |
| Number of ratings | **225** | 3 |
| Positive reviews | 66.7% of reviews | **70.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 5 weeks | Every 5 weeks |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 186 MB | 9 MB |
| Requires iOS | 15.0 | **14.2** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Loyal Foundry, Inc.](https://appshunter.io/developer/1620612434) | [ARASHIYAMA DESIGN GARAGE LLC.](https://appshunter.io/developer/524364589) |

## 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 |


### ナンプレ京APP

[App page](https://appshunter.io/ios/app/app/id1574331970)

Enjoy a vast collection of free Sudoku puzzles with varying difficulty levels, from easy to super hard. This app offers detailed technique explanations and a comfortable, user-friendly interface. Play offline at your own pace and track your solving times.

**Highlights:** 300+ puzzles per level (1-8), Super hard puzzle levels, Detailed technique explanations, Offline play, Memo and coloring functions, Unlimited hints, Time tracking

**Features:** macOS Compatibility

**In-app purchases:** none


## 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 ナンプレ京APP free?

ナンプレ京APP is free to download, with no in-app purchases.

### Which has better reviews, Sudoku | Keep your mind sharp! or ナンプレ京APP?

ナンプレ京APP is rated higher. Sudoku | Keep your mind sharp! averages 4.6 out of 5 from 225 ratings, while ナンプレ京APP averages 4.7 from 3 ratings.

### Do Sudoku | Keep your mind sharp! or ナンプレ京APP have ads?

Both Sudoku | Keep your mind sharp! and ナンプレ京APP show ads.

### Which is updated more often, Sudoku | Keep your mind sharp! or ナンプレ京APP?

Sudoku | Keep your mind sharp! ships an update every 5 weeks, and ナンプレ京APP every 5 weeks. Most recently, Sudoku | Keep your mind sharp! was updated on September 19, 2026 and ナンプレ京APP on July 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.*