# Galaxy Defender vs Operation

The clearest difference is review sentiment: Operation at 100% against Galaxy Defender's 0%. Operation also leads on update cadence (daily vs fortnightly). Galaxy Defender's advantage is iOS requirement (7.0 vs 15.6). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Galaxy Defender ships an update fortnightly, Operation daily. Both last shipped on October 16, 2026.

## The numbers

| Metric | Galaxy Defender | Operation |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/galaxy-defender/id422485011/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Daily** |
| Monetization | Free | Free |
| Size | 9 MB | 12 MB |
| Requires iOS | **7.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Procypher Software Co.](https://appshunter.io/developer/331824387) | [Boris Kravchenko](https://appshunter.io/developer/1700260082) |

## What reviewers say

### Galaxy Defender

[App page](https://appshunter.io/ios/app/galaxy-defender/id422485011)

Engage in fast-paced space combat to defend the galaxy from alien invaders. Blast through unlimited levels, improve your score, and master increasingly challenging gameplay. Enjoy vivid graphics and cool sound effects in this timeless arcade experience.

**Highlights:** Rapid fire laser combat, Unlimited game levels, Progressively harder gameplay, 4 degrees of game difficulty, Game Center enabled, Full game statistics

**Features:** macOS Compatibility

**In-app purchases:** none


### Operation

[App page](https://appshunter.io/ios/app/operation-invaders-from-space/id6738130147)

Pilot a spaceship to defend Earth from an alien invasion. Dodge enemy ships, collect star dust for points, and use onboard weapons to defeat the xenomorphs and save humanity.

**Highlights:** Spaceship combat, Alien invasion defense, Dodge enemy ships, Collect star dust, Use onboard weapons

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Galaxy Defender free?

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

### Is Operation free?

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

### Do Galaxy Defender or Operation have ads?

Neither Galaxy Defender nor Operation shows ads.

### Which is updated more often, Galaxy Defender or Operation?

Galaxy Defender ships an update fortnightly, and Operation daily. Most recently, Galaxy Defender was updated on October 16, 2026 and Operation on October 16, 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.*