# Sky Invaders vs Space Shooter Alien Galaxy War

The clearest difference is rating: Space Shooter Alien Galaxy War at 5.0 against Sky Invaders's 1.0. Space Shooter Alien Galaxy War also leads on update cadence (fortnightly vs every 23 months). Sky Invaders's advantage is in-app purchases (none vs 7) and ads (none vs shown). On price, ratings volume, device support and iOS requirement there is nothing between them.

Both are free to download. Space Shooter Alien Galaxy War sells 7 one-off in-app purchases. Sky Invaders asks for nothing beyond the download.

Space Shooter Alien Galaxy War holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

Sky Invaders ships an update every 23 months, Space Shooter Alien Galaxy War fortnightly. The most recent releases landed on September 14, 2026 and June 6, 2026 respectively.

## The numbers

| Metric | Sky Invaders | Space Shooter Alien Galaxy War |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/sky-invaders/id566963150/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/space-shooter-alien-galaxy-war/id6502821321/reviews)** |
| Number of ratings | 1 | **2** |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 23 months | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 4 MB | 155 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alphaworks](https://appshunter.io/developer/566963153) | [MOBINATORS (PRIVATE) LIMITED](https://appshunter.io/developer/1738422485) |

## What reviewers say

### Sky Invaders

[App page](https://appshunter.io/ios/app/sky-invaders/id566963150)

Defend Earth from relentless alien invaders as the last Sky Fighter. Obliterate waves of increasingly formidable enemies, strategize your limited firepower, and climb the leaderboard in this fast-paced, retro-style arcade game.

**Highlights:** Defend Earth from alien invaders, Increasingly challenging enemy waves, Limited firepower strategy, Climb the leaderboard, Fast-paced gameplay, Retro visuals

**In-app purchases:** none


### Space Shooter Alien Galaxy War

[App page](https://appshunter.io/ios/app/space-shooter-alien-galaxy-war/id6502821321)

Defend the galaxy from alien invaders in this thrilling offline space shooter. Pilot advanced starfighters, engage in intense dogfights, and complete challenging missions to save humanity. Upgrade your ship and face epic bosses.

**Highlights:** Offline space shooter gameplay, Upgrade starfighter with weapons and abilities, Multiple challenging levels, Epic boss battles, Simple and attractive graphics

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Get 10000 Coins | $1.99 | one-time |
| Get 200 Diamonds | $1.99 | one-time |
| Get 20000 Coins | $2.99 | one-time |
| Get 400 Diamonds | $2.99 | one-time |
| Get 30000 Coins | $3.99 | one-time |
| Get 850 Diamonds | $3.99 | one-time |
| Remove Ads | $4.99 | one-time |


## Frequently asked questions

### Is Sky Invaders free?

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

### Is Space Shooter Alien Galaxy War free?

Space Shooter Alien Galaxy War is free to download, with in-app purchases available.

### Which has better reviews, Sky Invaders or Space Shooter Alien Galaxy War?

Space Shooter Alien Galaxy War is rated higher. Sky Invaders averages 1.0 out of 5 from 1 ratings, while Space Shooter Alien Galaxy War averages 5.0 from 2 ratings.

### Do Sky Invaders or Space Shooter Alien Galaxy War have ads?

Space Shooter Alien Galaxy War shows ads; Sky Invaders does not.

### Which is updated more often, Sky Invaders or Space Shooter Alien Galaxy War?

Sky Invaders ships an update every 23 months, and Space Shooter Alien Galaxy War fortnightly. Most recently, Sky Invaders was updated on September 14, 2026 and Space Shooter Alien Galaxy War on June 6, 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.*