# Invaders Retro vs Retro Galactic Siege

The clearest difference is price: Retro Galactic Siege at Free against Invaders Retro's $0.99. Invaders Retro's advantage is in-app purchases (none vs 5) and update cadence (weekly vs every 2 months). On ads, device support and iOS requirement there is nothing between them.

Retro Galactic Siege is free to download; Invaders Retro costs $0.99 up front. Retro Galactic Siege sells 5 one-off in-app purchases. Invaders Retro asks for nothing beyond the download.

Invaders Retro ships an update weekly, Retro Galactic Siege every 2 months. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Invaders Retro | Retro Galactic Siege |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 months |
| Monetization | Paid | — |
| Size | 3 MB | 11 MB |
| Requires iOS | **14.2** | 15.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Justin Ngan](https://appshunter.io/developer/1467305957) | [ABRAHAM SEGOVIANO](https://appshunter.io/developer/1886602554) |

## What reviewers say

### 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


### Retro Galactic Siege

[App page](https://appshunter.io/ios/app/retro-galactic-siege/id6761139691)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Warhawk Ship | $0.99 | one-time |
| Xeno Drone ship | $0.99 | one-time |
| Neon Blade Ship | $0.99 | one-time |
| Phantom Ship | $0.99 | one-time |
| Dark Dimension Expansion | $1.99 | one-time |


## Frequently asked questions

### Is Invaders Retro free?

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

### Is Retro Galactic Siege free?

Retro Galactic Siege is free to download, with in-app purchases available.

### Do Invaders Retro or Retro Galactic Siege have ads?

Neither Invaders Retro nor Retro Galactic Siege shows ads.

### Which is updated more often, Invaders Retro or Retro Galactic Siege?

Invaders Retro ships an update weekly, and Retro Galactic Siege every 2 months. Most recently, Invaders Retro was updated on October 24, 2026 and Retro Galactic Siege on October 9, 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.*