# Zero Zero Puzzle vs Block Harmonics

The clearest difference is ads: Zero Zero Puzzle at none against Block Harmonics's shown. Zero Zero Puzzle also leads on iOS requirement (12.0 vs 15.1). On price, in-app purchases and device support there is nothing between them.

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

## The numbers

| Metric | Zero Zero Puzzle | Block Harmonics |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | — | Weekly |
| Size | 17 MB | 31 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [国财 胡](https://appshunter.io/developer/796061213) | [Ikuya Terasaka](https://appshunter.io/developer/1163471139) |

## What reviewers say

### Zero Zero Puzzle

[App page](https://appshunter.io/ios/app/zero-zero-puzzle/id1423049682)

**Features:** macOS Compatibility

**In-app purchases:** none


### Block Harmonics

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

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

**In-app purchases:** none


## Frequently asked questions

### Is Zero Zero Puzzle free?

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

### Is Block Harmonics free?

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

### Do Zero Zero Puzzle or Block Harmonics have ads?

Block Harmonics shows ads; Zero Zero Puzzle does not.

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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.*