# Alien Barrage vs Sky Guardian

The clearest difference is in-app purchases: Sky Guardian at none against Alien Barrage's 6. Sky Guardian also leads on update cadence (every 3 days vs every 3 months) and iOS requirement (15.0 vs 17.6). Alien Barrage's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Alien Barrage sells 6 one-off in-app purchases. Sky Guardian asks for nothing beyond the download.

Alien Barrage ships an update every 3 months, Sky Guardian every 3 days. The most recent releases landed on October 5, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Alien Barrage | Sky Guardian |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/alien-barrage/id6759081405/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 45 MB | 52 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 12+ | 12+ |
| Developer | [arnold biffna](https://appshunter.io/developer/1076122973) | [EMRE OZEL](https://appshunter.io/developer/6806816615) |

## What reviewers say

### Alien Barrage

[App page](https://appshunter.io/ios/app/alien-barrage/id6759081405)

Defend Earth from relentless alien invaders in this fast-paced retro arcade shooter. Dodge plasma, collect powerups, and survive challenging boss battles. Compete on global leaderboards for the highest score and wave survived.

**Highlights:** Touch-and-drag controls with automatic firing, Endless escalating waves of alien enemies, Bonus Rounds and Boss Battles, Collectible powerups and screen-clearing bombs, Unlockable ships and difficulty modes, Game Center leaderboards and achievements

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3 Revives | $0.99 | one-time |
| 10 Revives | $1.99 | one-time |
| 10 Extra Bombs. | $1.99 | one-time |
| Dual Shooter Ship | $2.99 | one-time |
| 40 revives | $4.99 | one-time |
| 100 Revives | $9.99 | one-time |


### Sky Guardian

[App page](https://appshunter.io/ios/app/sky-guardian-bullet-hell/id6806816613)

**In-app purchases:** none


## Frequently asked questions

### Is Alien Barrage free?

Alien Barrage is free to download, with in-app purchases available.

### Is Sky Guardian free?

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

### Do Alien Barrage or Sky Guardian have ads?

Sky Guardian shows ads; Alien Barrage does not.

### Which is updated more often, Alien Barrage or Sky Guardian?

Alien Barrage ships an update every 3 months, and Sky Guardian every 3 days. Most recently, Alien Barrage was updated on October 5, 2026 and Sky Guardian on October 10, 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.*