# Alien Robot Defender vs Rebound Invaders

The clearest difference is review sentiment: Alien Robot Defender at 100% against Rebound Invaders's 0%. Alien Robot Defender also leads on ads (none vs shown) and update cadence (every 2 months vs every 18 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 ships an update every 2 months, Rebound Invaders every 18 months. The most recent releases landed on October 7, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Alien Robot Defender | Rebound Invaders |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/alien-robot-defender/id460633266/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 18 months |
| Monetization | **Free** | Ad-supported |
| Size | 11 MB | 46 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

[App page](https://appshunter.io/ios/app/alien-robot-defender/id460633266)

Engage in a classic side-scrolling shooter experience, battling waves of alien robots. Your mission is to eliminate invaders, unlock progressively challenging levels, and achieve a high score. Master diverse robot movement patterns to succeed.

**Highlights:** Side-scrolling gameplay, Battle alien robots, Unlock new levels, High score challenges, Easy controls, 40 challenging levels

**Features:** macOS Compatibility

**In-app purchases:** none


### Rebound Invaders

[App page](https://appshunter.io/ios/app/rebound-invaders/id896339002)

Experience a retro arcade space shooter where your plasma ball bounces off walls and enemies. Dodge your own ricocheting projectiles and alien counter-attacks to survive. Features tilt or on-screen controls for classic shoot'em up action.

**Highlights:** Bouncing plasma ball weapon, Ricocheting projectiles, Alien force field defense, Tilt or on-screen controls, Fast-paced arcade action, Retro graphics

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

**In-app purchases:** none


## Frequently asked questions

### Is Alien Robot Defender free?

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

### Is Rebound Invaders free?

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

### Do Alien Robot Defender or Rebound Invaders have ads?

Rebound Invaders shows ads; Alien Robot Defender does not.

### Which is updated more often, Alien Robot Defender or Rebound Invaders?

Alien Robot Defender ships an update every 2 months, and Rebound Invaders every 18 months. Most recently, Alien Robot Defender was updated on October 7, 2026 and Rebound Invaders on October 4, 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.*