# Invader Sisters vs Alien Robot

The clearest difference is ads: Alien Robot at none against Invader Sisters's shown. Alien Robot also leads on iOS requirement (10.0 vs 12.0). Invader Sisters's advantage is update cadence (every 2 weeks vs every 34 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.

Invader Sisters ships an update every 2 weeks, Alien Robot every 34 months. The most recent releases landed on October 5, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Invader Sisters | Alien Robot |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.5 (2 ratings)](https://appshunter.io/ios/app/alien-robot/id943794563/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 34 months |
| Monetization | — | Free |
| Size | 19 MB | 35 MB |
| Requires iOS | 12.0 | **10.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ERX](https://appshunter.io/developer/513941286) | [国财 胡](https://appshunter.io/developer/796061213) |

## What reviewers say

### Invader Sisters

[App page](https://appshunter.io/ios/app/invader-sisters/id939103577)

**Features:** macOS Compatibility

**In-app purchases:** none


### Alien Robot

[App page](https://appshunter.io/ios/app/alien-robot/id943794563)

This is a fun, casual puzzle game with gorgeous graphics and themed levels. Players must solve challenges and pass hurdles to advance through levels as quickly as possible. It supports phones and tablets and is free to play.

**Highlights:** Casual puzzle gameplay, Themed levels, Gorgeous graphics, Challenging hurdles, Supports phones and tablets, Constantly updated levels

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Invader Sisters free?

Invader Sisters is free to download, with no in-app purchases.

### Is Alien Robot free?

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

### Do Invader Sisters or Alien Robot have ads?

Invader Sisters shows ads; Alien Robot does not.

### Which is updated more often, Invader Sisters or Alien Robot?

Invader Sisters ships an update every 2 weeks, and Alien Robot every 34 months. Most recently, Invader Sisters was updated on October 5, 2026 and Alien Robot on October 24, 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.*