# Astro Invaders vs ISUD Zero

The clearest difference is in-app purchases: ISUD Zero at none against Astro Invaders's 6. ISUD Zero also leads on ads (none vs shown). Astro Invaders's advantage is iOS requirement (13.0 vs 15.0). On price and device support there is nothing between them.

Both are free to download. Astro Invaders sells 6 one-off in-app purchases. ISUD Zero asks for nothing beyond the download.

## The numbers

| Metric | Astro Invaders | ISUD Zero |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/astro-invaders/id6751432275/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Weekly | — |
| Monetization | Free with in-app purchases | — |
| Size | 110 MB | 119 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 12+ |
| Developer | [Sang Yoon Lee](https://appshunter.io/developer/1639696646) | [Suwitcha Sugthana](https://appshunter.io/developer/372726303) |

## What reviewers say

### Astro Invaders

[App page](https://appshunter.io/ios/app/astro-invaders/id6751432275)

Experience an intense arcade space battle with simple controls. Upgrade your ship to rapidly grow stronger and defeat challenging bosses. Uncover a lasting story through 21 boss encounters.

**Highlights:** Simple movement and shooting controls, Intense space battles, Ship upgrades for rapid growth, 21 boss battles, Uncover a lasting story, Casual action and rail shooter mechanics

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Ad Skip | $0.99 | one-time |
| 10000 Bit Pack | $0.99 | one-time |
| Super Bit Pack | $1.99 | one-time |
| Mega Bit Pack | $2.99 | one-time |
| 50000 Bit Pack | $2.99 | one-time |
| 150000 Bit Pack | $4.99 | one-time |


### ISUD Zero

[App page](https://appshunter.io/ios/app/isud-zero/id6765926399)

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

**In-app purchases:** none


## Frequently asked questions

### Is Astro Invaders free?

Astro Invaders is free to download, with in-app purchases available.

### Is ISUD Zero free?

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

### Do Astro Invaders or ISUD Zero have ads?

Astro Invaders shows ads; ISUD Zero does not.

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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.*