# Sudoku Puzzles SDG vs Seven7

The clearest difference is in-app purchases: Sudoku Puzzles SDG at none against Seven7's 3. Seven7's advantage is update cadence (every 3 days vs every 47 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Seven7 sells 3 one-off in-app purchases. Sudoku Puzzles SDG asks for nothing beyond the download.

Sudoku Puzzles SDG ships an update every 47 months, Seven7 every 3 days. The most recent releases landed on November 2, 2026 and December 6, 2025 respectively.

## The numbers

| Metric | Sudoku Puzzles SDG | Seven7 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/sudoku-puzzles-sdg/id1372750870/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 47 months | **Every 3 days** |
| Monetization | Ad-supported | — |
| Size | 12 MB | 9 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [SDG CODE DOO NIS](https://appshunter.io/developer/1343251532) | [Burak Cicek](https://appshunter.io/developer/1235558144) |

## What reviewers say

### Sudoku Puzzles SDG

[App page](https://appshunter.io/ios/app/sudoku-puzzles-sdg/id1372750870)

Sharpen your mind with this classic Sudoku game. It offers four difficulty levels, a user-friendly interface, and helpful tools like mistake highlighting and hints to aid your progress. Track your performance with ranking lists and never lose your game thanks to autosave.

**Highlights:** 4 difficulty levels, Mistake and number highlighting, Note keeping, Hint option, Autosave, Ranking lists

**Features:** macOS Compatibility

**In-app purchases:** none


### Seven7

[App page](https://appshunter.io/ios/app/seven7/id1595582035)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Heart | $0.99 | one-time |
| 2 Hearts | $1.99 | one-time |
| 3 Hearts | $2.99 | one-time |


## Frequently asked questions

### Is Sudoku Puzzles SDG free?

Sudoku Puzzles SDG is free to download, with no in-app purchases.

### Is Seven7 free?

Seven7 is free to download, with in-app purchases available.

### Do Sudoku Puzzles SDG or Seven7 have ads?

Both Sudoku Puzzles SDG and Seven7 show ads.

### Which is updated more often, Sudoku Puzzles SDG or Seven7?

Sudoku Puzzles SDG ships an update every 47 months, and Seven7 every 3 days. Most recently, Sudoku Puzzles SDG was updated on November 2, 2026 and Seven7 on December 6, 2025.

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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.*