# Happy Blocks 3D vs Kromium

The clearest difference is update cadence: Kromium at every 2 days against Happy Blocks 3D's fortnightly. On price, ads, 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.

Happy Blocks 3D ships an update fortnightly, Kromium every 2 days. The most recent releases landed on October 28, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Happy Blocks 3D | Kromium |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/kromium/id6747734910/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | — | Free |
| Size | 151 MB | 47 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Furkan Ozay](https://appshunter.io/developer/1805215219) | [james gibbens](https://appshunter.io/developer/1820693723) |

## What reviewers say

### Happy Blocks 3D

[App page](https://appshunter.io/ios/app/happy-blocks-3d/id6743943678)

**Features:** macOS Compatibility

**In-app purchases:** none


### Kromium

[App page](https://appshunter.io/ios/app/kromium/id6747734910)

Experience a satisfying color puzzle game with intuitive drag-and-drop mechanics and mesmerizing flood-fill animations. Complete hundreds of handcrafted levels with progressive difficulty, designed for both quick breaks and extended play.

**Highlights:** Intuitive drag-and-drop gameplay, Mesmerizing flood-fill mechanics, Hundreds of handcrafted levels, Progressive difficulty modes, Offline play, Star rating system

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Happy Blocks 3D free?

Happy Blocks 3D is free to download, with no in-app purchases.

### Is Kromium free?

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

### Do Happy Blocks 3D or Kromium have ads?

Neither Happy Blocks 3D nor Kromium shows ads.

### Which is updated more often, Happy Blocks 3D or Kromium?

Happy Blocks 3D ships an update fortnightly, and Kromium every 2 days. Most recently, Happy Blocks 3D was updated on October 28, 2026 and Kromium on October 16, 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.*