# RobotVSAlien vs Alien Attack 3D

The clearest difference is ads: RobotVSAlien at none against Alien Attack 3D's shown. RobotVSAlien also leads on update cadence (every 2 weeks vs every 6 months) and iOS requirement (7.0 vs 12.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. RobotVSAlien sells 1 one-off in-app purchase and Alien Attack 3D sells 2 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.

RobotVSAlien ships an update every 2 weeks, Alien Attack 3D every 6 months. The most recent releases landed on October 4, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | RobotVSAlien | Alien Attack 3D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/robotvsalien/id863067072/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Every 6 months |
| Monetization | Free with in-app purchases | — |
| Size | 55 MB | 124 MB |
| Requires iOS | **7.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 9+ |
| Developer | [Akihiro Fujiwara](https://appshunter.io/developer/721031264) | [FRIENDLY APPS LTD](https://appshunter.io/developer/1514360327) |

## What reviewers say

### RobotVSAlien

[App page](https://appshunter.io/ios/app/robotvsalien/id863067072)

Defend against alien invaders using a growing army of robots. This casual defense game allows players to upgrade and promote their units to increase their strength. Design your own giant robot and repel the alien threat.

**Highlights:** Casual defense gameplay, Unit promotion and upgrading, Design giant robots, Repel alien invaders, Unique robot and alien designs

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads and Privilege granting | $0.99 | one-time |


### 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 RobotVSAlien free?

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

### Is Alien Attack 3D free?

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

### Do RobotVSAlien or Alien Attack 3D have ads?

Alien Attack 3D shows ads; RobotVSAlien does not.

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

RobotVSAlien ships an update every 2 weeks, and Alien Attack 3D every 6 months. Most recently, RobotVSAlien was updated on October 4, 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.*