# Rocket Invaders vs Zombie Siege

The clearest difference is iOS requirement: Rocket Invaders at 13.0 against Zombie Siege's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Rocket Invaders sells 8 one-off in-app purchases and Zombie Siege sells 15 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Rocket Invaders ships an update every 9 days, Zombie Siege fortnightly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Rocket Invaders | Zombie Siege |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 9 days** | Fortnightly |
| Size | 258 MB | 294 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Krada Studio Corp](https://appshunter.io/developer/1821603226) | [Perfeggs](https://appshunter.io/developer/1664686968) |

## What reviewers say

### Rocket Invaders

[App page](https://appshunter.io/ios/app/rocket-invaders/id6747470112)

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Permanently Unlock All Weapons | $0.99 | one-time |
| Save Sector Progress | $0.99 | one-time |
| Faster Fuel Pipe Transfers | $0.99 | one-time |
| Slower Bonus Crate Expiry Time | $0.99 | one-time |
| Slower Wave Timers | $0.99 | one-time |
| Remove Ads & Extra Resource | $2.99 | one-time |
| Full Converters at New Planet | $2.99 | one-time |
| Rocket Mega Pack | $4.99 | one-time |


### Zombie Siege

[App page](https://appshunter.io/ios/app/zombie-siege-haven-defense/id6809312611)

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

**In-app purchases (15)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Special Pack | $1.99 | one-time |
| Value Pack | $2.99 | one-time |
| Store Diamond2 | $4.99 | one-time |
| Surprise Pack | $4.99 | one-time |
| Deluxe Pack | $9.99 | one-time |
| Store Diamond3 | $9.99 | one-time |
| Elite Pack | $14.99 | one-time |
| Store Diamond4 | $19.99 | one-time |
| Master Pack | $29.99 | one-time |
| Store Diamond5 | $29.99 | one-time |
| Ultimate Pack | $49.99 | one-time |
| Store Diamond6 | $49.99 | one-time |
| Legendary Pack | $99.99 | one-time |
| Store Diamond7 | $99.99 | one-time |
| Store Diamond8 | $199.99 | one-time |


## Frequently asked questions

### Is Rocket Invaders free?

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

### Is Zombie Siege free?

Zombie Siege is free to download, with in-app purchases available.

### Do Rocket Invaders or Zombie Siege have ads?

Both Rocket Invaders and Zombie Siege show ads.

### Which is updated more often, Rocket Invaders or Zombie Siege?

Rocket Invaders ships an update every 9 days, and Zombie Siege fortnightly. Most recently, Rocket Invaders was updated on October 30, 2026 and Zombie Siege on October 31, 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.*