# Rock Zapper vs Defender Reborn

The clearest difference is in-app purchases: Rock Zapper at none against Defender Reborn's 1. Rock Zapper also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Defender Reborn sells 1 one-off in-app purchase. Rock Zapper asks for nothing beyond the download.

Rock Zapper ships an update every 6 days, Defender Reborn weekly. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Rock Zapper | Defender Reborn |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/defender-reborn/id6791315802/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 6 days** | Weekly |
| Monetization | — | Free with in-app purchases |
| Size | 36 MB | 96 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Kang Engineering Systems LLC](https://appshunter.io/developer/1506663175) | [Mark Mangieri](https://appshunter.io/developer/1689388804) |

## What reviewers say

### Rock Zapper

[App page](https://appshunter.io/ios/app/rock-zapper/id6772417015)

**Features:** macOS Compatibility

**In-app purchases:** none


### Defender Reborn

[App page](https://appshunter.io/ios/app/defender-reborn/id6791315802)

Defend humanity's last colonists from alien raiders in this reimagined retro arcade shoot-'em-up. Experience classic gameplay rebuilt for modern touch screens.

**Highlights:** Retro arcade shoot-'em-up gameplay, Rebuilt for modern touch screens, Defend colonists from alien raiders, Classic arcade tribute

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


## Frequently asked questions

### Is Rock Zapper free?

Rock Zapper is free to download, with no in-app purchases.

### Is Defender Reborn free?

Defender Reborn is free to download, with in-app purchases available.

### Do Rock Zapper or Defender Reborn have ads?

Defender Reborn shows ads; Rock Zapper does not.

### Which is updated more often, Rock Zapper or Defender Reborn?

Rock Zapper ships an update every 6 days, and Defender Reborn weekly. Most recently, Rock Zapper was updated on October 31, 2026 and Defender Reborn on November 5, 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.*