# Alien Robot Defender Free vs Alien Swarm 3

The clearest difference is ads: Alien Robot Defender Free at none against Alien Swarm 3's shown. Alien Robot Defender Free also leads on iOS requirement (6.0 vs 13.0). Alien Swarm 3's advantage is update cadence (every 23 months vs every 50 months). On price, 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.

Alien Robot Defender Free ships an update every 50 months, Alien Swarm 3 every 23 months. Both last shipped on November 1, 2026.

## The numbers

| Metric | Alien Robot Defender Free | Alien Swarm 3 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/alien-robot-defender-free/id548626813/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 50 months | **Every 23 months** |
| Monetization | Free | — |
| Size | 13 MB | 67 MB |
| Requires iOS | **6.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Mike Hempfling](https://appshunter.io/developer/422781074) | [Galatic Droids](https://appshunter.io/developer/806182439) |

## What reviewers say

### Alien Robot Defender Free

[App page](https://appshunter.io/ios/app/alien-robot-defender-free/id548626813)

Engage in a classic side-scrolling shooter, defending against waves of alien robots. Strategically shoot invaders to unlock new levels and achieve high scores. Different robot behaviors add to the challenge.

**Highlights:** Classic side-scrolling gameplay, Battle alien robots, Unlock new levels, High score challenges, Master 40 levels, Sharp shooter bonus

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

**In-app purchases:** none


### Alien Swarm 3

[App page](https://appshunter.io/ios/app/alien-swarm-3/id1002907288)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Alien Robot Defender Free free?

Alien Robot Defender Free is free to download, with no in-app purchases.

### Is Alien Swarm 3 free?

Alien Swarm 3 is free to download, with no in-app purchases.

### Do Alien Robot Defender Free or Alien Swarm 3 have ads?

Alien Swarm 3 shows ads; Alien Robot Defender Free does not.

### Which is updated more often, Alien Robot Defender Free or Alien Swarm 3?

Alien Robot Defender Free ships an update every 50 months, and Alien Swarm 3 every 23 months. Most recently, Alien Robot Defender Free was updated on November 1, 2026 and Alien Swarm 3 on November 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.*