# Alien Robot Defender Free vs Puppy Runner

The clearest difference is ads: Alien Robot Defender Free at none against Puppy Runner's shown. Alien Robot Defender Free also leads on iOS requirement (6.0 vs 12.0). Puppy Runner'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, Puppy Runner every 23 months. Both last shipped on November 1, 2026.

## The numbers

| Metric | Alien Robot Defender Free | Puppy Runner |
| --- | --- | --- |
| 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 | 22 MB |
| Requires iOS | **6.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mike Hempfling](https://appshunter.io/developer/422781074) | [Dream-Up](https://appshunter.io/developer/445196122) |

## 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


### Puppy Runner

[App page](https://appshunter.io/ios/app/puppy-runner/id840531829)

**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 Puppy Runner free?

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

### Do Alien Robot Defender Free or Puppy Runner have ads?

Puppy Runner shows ads; Alien Robot Defender Free does not.

### Which is updated more often, Alien Robot Defender Free or Puppy Runner?

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