# Chess Peace vs SudokuOS

The clearest difference is in-app purchases: SudokuOS at none against Chess Peace's 2. SudokuOS also leads on update cadence (every 4 days vs fortnightly). Chess Peace's advantage is review sentiment (89% vs 71%). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. Chess Peace sells 2 one-off in-app purchases. SudokuOS asks for nothing beyond the download.

Chess Peace ships an update fortnightly, SudokuOS every 4 days. The most recent releases landed on November 9, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Chess Peace | SudokuOS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (142 ratings)](https://appshunter.io/ios/app/chess-peace/id6760270817/reviews)** | — |
| Number of ratings | **142** | — |
| Positive reviews | **89.1% of reviews** | 71.4% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 4 days** |
| Monetization | Free | Free |
| Size | 185 MB | 10 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sam Shepherd](https://appshunter.io/developer/1883556970) | [Seidelapps](https://appshunter.io/developer/6819037694) |

## What reviewers say

### Chess Peace

[App page](https://appshunter.io/ios/app/chess-peace/id6760270817)

Engage in a peaceful, ad-free chess puzzle experience offline. No prior chess knowledge is needed to enjoy thousands of daily challenges and five unique puzzle modes. Customize your gameplay and track progress with detailed statistics.

**Highlights:** Offline play with no ads, Thousands of unique puzzles, Daily puzzle challenges, Five distinct puzzle modes, Extensive customization options, iCloud sync for progress, Home & Lock Screen Widgets

**Features:** Family Sharing, Vision Pro support, iPhone Duo support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Unlock | $8.99 | one-time |
| Premium Unlock | $11.99 | one-time |


### SudokuOS

[App page](https://appshunter.io/ios/app/sudokuos/id6819037692)

Solve Sudoku puzzles with five difficulty levels on your iPhone or iPad. Utilize notes, candidates, hints, and an erase function. Track your progress with ratings and charts, and enjoy automatic saving for uninterrupted gameplay.

**Highlights:** Five difficulty levels, Notes and candidate filling, Hint and erase functions, Progress tracking and rating, Automatic game saving, Customizable accent colors and haptics

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

**In-app purchases:** none


## Frequently asked questions

### Is Chess Peace free?

Chess Peace is free to download, with in-app purchases available.

### Is SudokuOS free?

SudokuOS is free to download, with no in-app purchases.

### Do Chess Peace or SudokuOS have ads?

Neither Chess Peace nor SudokuOS shows ads.

### Which is updated more often, Chess Peace or SudokuOS?

Chess Peace ships an update fortnightly, and SudokuOS every 4 days. Most recently, Chess Peace was updated on November 9, 2026 and SudokuOS on November 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.*