# Invader Sisters vs Invaders Retro

The clearest difference is price: Invader Sisters at Free against Invaders Retro's $0.99. Invader Sisters also leads on iOS requirement (12.0 vs 14.2). Invaders Retro's advantage is ads (none vs shown) and device support (4 vs 2). On update cadence and in-app purchases there is nothing between them.

Invader Sisters is free to download; Invaders Retro costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Invader Sisters ships an update every 2 weeks, Invaders Retro weekly. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Invader Sisters | Invaders Retro |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | — | Paid |
| Size | 19 MB | 3 MB |
| Requires iOS | **12.0** | 14.2 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [ERX](https://appshunter.io/developer/513941286) | [Justin Ngan](https://appshunter.io/developer/1467305957) |

## What reviewers say

### Invader Sisters

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Invaders Retro

[App page](https://appshunter.io/ios/app/invaders-retro/id1544672448)

Defend Earth from relentless alien waves in this retro-inspired shooter. Discover hidden scoring mechanics as you battle through increasingly challenging levels to save the planet.

**Highlights:** Alien invasion gameplay, Wave-based challenges, Hidden scoring system, Retro graphics, Planet defense

**Features:** Game Controller support

**In-app purchases:** none


## Frequently asked questions

### Is Invader Sisters free?

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

### Is Invaders Retro free?

Invaders Retro costs $0.99, with no in-app purchases.

### Do Invader Sisters or Invaders Retro have ads?

Invader Sisters shows ads; Invaders Retro does not.

### Which is updated more often, Invader Sisters or Invaders Retro?

Invader Sisters ships an update every 2 weeks, and Invaders Retro weekly. Most recently, Invader Sisters was updated on October 26, 2026 and Invaders Retro 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.*