# Cube vs Entropy

The clearest difference is in-app purchases: Cube at none against Entropy's 4. Cube also leads on iOS requirement (13.0 vs 18.6). Entropy's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 4 months). On price and device support there is nothing between them.

Both are free to download. Entropy sells 4 one-off in-app purchases. Cube asks for nothing beyond the download.

Cube ships an update every 4 months, Entropy every 2 weeks. The most recent releases landed on September 25, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Cube | Entropy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (25 ratings)](https://appshunter.io/ios/app/cube-geometric-projection/id1552379403/reviews)** | — |
| Number of ratings | **25** | — |
| Positive reviews | 54.2% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | Ad-supported | — |
| Size | 9 MB | 6 MB |
| Requires iOS | **13.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Gude Aipu Technology Co., Ltd](https://appshunter.io/developer/1896411340) | [Erdener Uyan](https://appshunter.io/developer/1843571074) |

## What reviewers say

### Cube

[App page](https://appshunter.io/ios/app/cube-geometric-projection/id1552379403)

This game challenges your spatial reasoning by having you visualize 3D geometric shapes from their 2D projections. Test your imagination by predicting the final form based on front, side, and top views.

**Highlights:** Visualize 3D shapes from 2D views, Front, side, and top view observation, Spatial imagination training, Geometric puzzle gameplay

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

**In-app purchases:** none


### Entropy

[App page](https://appshunter.io/ios/app/entropy-zero/id6757635585)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Emergency Kit | $0.99 | one-time |
| Hacker Bundle | $2.99 | one-time |
| Developer Access | $4.99 | one-time |
| Survival Mode | $9.99 | one-time |


## Frequently asked questions

### Is Cube free?

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

### Is Entropy free?

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

### Do Cube or Entropy have ads?

Cube shows ads; Entropy does not.

### Which is updated more often, Cube or Entropy?

Cube ships an update every 4 months, and Entropy every 2 weeks. Most recently, Cube was updated on September 25, 2026 and Entropy on September 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.*