# ROTATRIX vs Retro Memory Puzzle

The clearest difference is in-app purchases: Retro Memory Puzzle at none against ROTATRIX's 1. ROTATRIX's advantage is update cadence (daily vs weekly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ROTATRIX sells 1 one-off in-app purchase. Retro Memory Puzzle asks for nothing beyond the download.

ROTATRIX ships an update daily, Retro Memory Puzzle weekly. Both last shipped on November 5, 2026.

## The numbers

| Metric | ROTATRIX | Retro Memory Puzzle |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Daily** | Weekly |
| Size | 51 MB | 128 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Henricus van den Hurk](https://appshunter.io/developer/1896173715) | [Duong Pham Son](https://appshunter.io/developer/1297138564) |

## What reviewers say

### ROTATRIX

[App page](https://appshunter.io/ios/app/rotatrix-old/id6766042003)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


### Retro Memory Puzzle

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

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

**In-app purchases:** none


## Frequently asked questions

### Is ROTATRIX free?

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

### Is Retro Memory Puzzle free?

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

### Do ROTATRIX or Retro Memory Puzzle have ads?

Both ROTATRIX and Retro Memory Puzzle show ads.

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

ROTATRIX ships an update daily, and Retro Memory Puzzle weekly. Most recently, ROTATRIX was updated on November 5, 2026 and Retro Memory Puzzle on November 5, 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.*