# Circle Divider vs Alien Attack 3D

The clearest difference is in-app purchases: Circle Divider at none against Alien Attack 3D's 2. Circle Divider also leads on update cadence (every 3 days vs every 6 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Alien Attack 3D sells 2 in-app purchases, starting at $19.99 per month. Circle Divider asks for nothing beyond the download.

Circle Divider ships an update every 3 days, Alien Attack 3D every 6 months. The most recent releases landed on September 25, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Circle Divider | Alien Attack 3D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.6 (18 ratings)](https://appshunter.io/ios/app/circle-divider/id1630943114/reviews)** | — |
| Number of ratings | **18** | — |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 3 days** | Every 6 months |
| Monetization | Ad-supported | — |
| Size | 46 MB | 124 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [FUBU GAMES OYUN YAZILIM VE BILGI TEKNOLOJILERI TICARET LIMITED SIRKETI](https://appshunter.io/developer/1526018818) | [FRIENDLY APPS LTD](https://appshunter.io/developer/1514360327) |

## What reviewers say

### Circle Divider

[App page](https://appshunter.io/ios/app/circle-divider/id1630943114)

A puzzle game where players divide circles on their screen to uncover a hidden image. It offers a simple yet engaging challenge for players looking to test their visual perception and problem-solving skills.

**Highlights:** Divide circles, Reveal hidden images, Simple gameplay, Puzzle challenge, Visual perception test

**Features:** macOS Compatibility

**In-app purchases:** none


### Alien Attack 3D

[App page](https://appshunter.io/ios/app/alien-attack-3d-invasion/id6447258590)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Bundle Features Unlocked! | $19.99 | per month |
| All AppCentral Games Unlocked! | $39.99 | per month |


## Frequently asked questions

### Is Circle Divider free?

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

### Is Alien Attack 3D free?

Alien Attack 3D is free to download, with in-app purchases available.

### Do Circle Divider or Alien Attack 3D have ads?

Both Circle Divider and Alien Attack 3D show ads.

### Which is updated more often, Circle Divider or Alien Attack 3D?

Circle Divider ships an update every 3 days, and Alien Attack 3D every 6 months. Most recently, Circle Divider was updated on September 25, 2026 and Alien Attack 3D on October 1, 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.*