# 3D Cube Assembly vs Hidden Blocks

The clearest difference is in-app purchases: 3D Cube Assembly at none against Hidden Blocks's 8. 3D Cube Assembly also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.0). Hidden Blocks's advantage is update cadence (weekly vs every 3 weeks). On price and device support there is nothing between them.

Both are free to download. Hidden Blocks sells 8 one-off in-app purchases. 3D Cube Assembly asks for nothing beyond the download.

3D Cube Assembly ships an update every 3 weeks, Hidden Blocks weekly. The most recent releases landed on October 11, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | 3D Cube Assembly | Hidden Blocks |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Weekly** |
| Size | 73 MB | 89 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [晓清 周](https://appshunter.io/developer/1837059723) | [Logan Land](https://appshunter.io/developer/1896703411) |

## What reviewers say

### 3D Cube Assembly

[App page](https://appshunter.io/ios/app/3d-cube-assembly/id6751834525)

**Features:** macOS Compatibility

**In-app purchases:** none


### Hidden Blocks

[App page](https://appshunter.io/ios/app/hidden-blocks-cube-counting/id6776471897)

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 Gems | $0.99 | one-time |
| 20 Gems | $1.99 | one-time |
| Unlimited Play · 3 Hours | $2.99 | one-time |
| 50 Gems | $4.99 | one-time |
| Unlimited Play · 24 Hours | $6.99 | one-time |
| 125 Gems | $9.99 | one-time |
| 250 Gems | $19.99 | one-time |
| 700 Gems | $49.99 | one-time |


## Frequently asked questions

### Is 3D Cube Assembly free?

3D Cube Assembly is free to download, with no in-app purchases.

### Is Hidden Blocks free?

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

### Do 3D Cube Assembly or Hidden Blocks have ads?

Hidden Blocks shows ads; 3D Cube Assembly does not.

### Which is updated more often, 3D Cube Assembly or Hidden Blocks?

3D Cube Assembly ships an update every 3 weeks, and Hidden Blocks weekly. Most recently, 3D Cube Assembly was updated on October 11, 2026 and Hidden Blocks on October 17, 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.*