# Invader Sisters vs Asteroid Attacks Defense Earth

The clearest difference is ads: Asteroid Attacks Defense Earth at none against Invader Sisters's shown. Invader Sisters's advantage is update cadence (every 2 weeks vs every 5 months). On price, in-app purchases, device support and iOS requirement 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, Asteroid Attacks Defense Earth every 5 months. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Invader Sisters | Asteroid Attacks Defense Earth |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 5 months |
| Size | 19 MB | 58 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [ERX](https://appshunter.io/developer/513941286) | [MUHAMMAD ABUBAKER MAJEED](https://appshunter.io/developer/1197855204) |

## What reviewers say

### Invader Sisters

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Asteroid Attacks Defense Earth

[App page](https://appshunter.io/ios/app/asteroid-attacks-defense-earth/id1578868875)

**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 Asteroid Attacks Defense Earth free?

Asteroid Attacks Defense Earth is free to download, with no in-app purchases.

### Do Invader Sisters or Asteroid Attacks Defense Earth have ads?

Invader Sisters shows ads; Asteroid Attacks Defense Earth does not.

### Which is updated more often, Invader Sisters or Asteroid Attacks Defense Earth?

Invader Sisters ships an update every 2 weeks, and Asteroid Attacks Defense Earth every 5 months. Most recently, Invader Sisters was updated on October 26, 2026 and Asteroid Attacks Defense Earth on October 27, 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.*