# Sky Troops vs Space Invader

The clearest difference is in-app purchases: Space Invader at none against Sky Troops's 3. Space Invader also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.6). On price, update cadence and device support there is nothing between them.

Both are free to download. Sky Troops sells 3 one-off in-app purchases. Space Invader asks for nothing beyond the download.

Sky Troops ships an update every 11 months, Space Invader every 6 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Sky Troops | Space Invader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (7 ratings)](https://appshunter.io/ios/app/sky-troops/id993485690/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 11 months | **Every 6 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 15 MB | 57 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Tang Cho man](https://appshunter.io/developer/592719186) | [Sergey Shevtsov](https://appshunter.io/developer/1266417281) |

## What reviewers say

### Sky Troops

[App page](https://appshunter.io/ios/app/sky-troops/id993485690)

Pilot a steampunk plane in this cartoon-style scrolling shooter. Engage in intense aerial combat, dodge enemy attacks, and unleash bombs to defeat waves of foes. Upgrade your aircraft or unlock new planes with collected energy to face challenging bosses and enjoy thrilling gameplay.

**Highlights:** Control steampunk planes, Fight waves of enemies, Upgrade and unlock planes, Six distinctive fighter choices, Multiple upgrade levels per fighter, Challenging boss battles

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 5 Bombs | $0.99 | one-time |
| 100 Energy | $1.99 | one-time |
| 200 Energy | $2.99 | one-time |


### Space Invader

[App page](https://appshunter.io/ios/app/space-invader-space-shooter/id1266417282)

Engage in a thrilling 2D space battle against relentless alien invaders. Survive a galactic war alone, utilizing powerful weapons and collecting essential items to overcome increasingly difficult levels. Experience an epic cosmic survival adventure with engaging graphics and sound.

**Highlights:** Galactic space battles, Alien and robot enemies, Weapon collection and upgrades, Survival challenges, Qualitative graphics, Exciting sound effects

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sky Troops free?

Sky Troops is free to download, with in-app purchases available.

### Is Space Invader free?

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

### Do Sky Troops or Space Invader have ads?

Sky Troops shows ads; Space Invader does not.

### Which is updated more often, Sky Troops or Space Invader?

Sky Troops ships an update every 11 months, and Space Invader every 6 months. Most recently, Sky Troops was updated on October 24, 2026 and Space Invader 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.*