# Retro Memory Puzzle vs Sudoku Clear

Retro Memory Puzzle and Sudoku Clear are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Retro Memory Puzzle ships an update weekly, Sudoku Clear every 6 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | Retro Memory Puzzle | Sudoku Clear |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Weekly | **Every 6 days** |
| Size | 128 MB | 26 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Duong Pham Son](https://appshunter.io/developer/1297138564) | [HARRY KIM](https://appshunter.io/developer/6774494379) |

## What reviewers say

### Retro Memory Puzzle

[App page](https://appshunter.io/ios/app/retro-memory-puzzle/id6774979445)

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

**In-app purchases:** none


### Sudoku Clear

[App page](https://appshunter.io/ios/app/sudoku-clear/id6777523967)

**In-app purchases:** none


## Frequently asked questions

### Is Retro Memory Puzzle free?

Retro Memory Puzzle is free to download, with no in-app purchases.

### Is Sudoku Clear free?

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

### Do Retro Memory Puzzle or Sudoku Clear have ads?

Both Retro Memory Puzzle and Sudoku Clear show ads.

### Which is updated more often, Retro Memory Puzzle or Sudoku Clear?

Retro Memory Puzzle ships an update weekly, and Sudoku Clear every 6 days. Most recently, Retro Memory Puzzle was updated on October 24, 2026 and Sudoku Clear on October 24, 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.*