# Alien Invader Escape vs Fly Bird

The clearest difference is device support: Alien Invader Escape at 3 against Fly Bird's —. Fly Bird's advantage is iOS requirement (9.0 vs 15.6). On price and in-app purchases there is nothing between them.

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

## The numbers

| Metric | Alien Invader Escape | Fly Bird |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | — |
| Update frequency | Every 18 months | — |
| Size | 14 MB | 40 MB |
| Requires iOS | 15.6 | **9.0** |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Tang Cho man](https://appshunter.io/developer/592719186) | [Rikuto Komatsu](https://appshunter.io/developer/1533655565) |

## What reviewers say

### Alien Invader Escape

[App page](https://appshunter.io/ios/app/alien-invader-escape/id858894874)

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

**In-app purchases:** none


### Fly Bird

[App page](https://appshunter.io/ios/app/fly-bird/id1619695116)

**In-app purchases:** none


## Frequently asked questions

### Is Alien Invader Escape free?

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

### Is Fly Bird free?

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

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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.*