# Block Harmonics vs Retro Memory Puzzle

Block Harmonics and Retro Memory Puzzle 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.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on September 29, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Block Harmonics | Retro Memory Puzzle |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Weekly | Weekly |
| Size | 31 MB | 128 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ikuya Terasaka](https://appshunter.io/developer/1163471139) | [Duong Pham Son](https://appshunter.io/developer/1297138564) |

## What reviewers say

### Block Harmonics

[App page](https://appshunter.io/ios/app/block-harmonics/id6752220613)

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

**In-app purchases:** none


### 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 Block Harmonics free?

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

### Is Retro Memory Puzzle free?

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

### Do Block Harmonics or Retro Memory Puzzle have ads?

Both Block Harmonics and Retro Memory Puzzle show ads.

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

Block Harmonics ships an update weekly, and Retro Memory Puzzle weekly. Most recently, Block Harmonics was updated on September 29, 2026 and Retro Memory Puzzle on September 19, 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.*