# Rocket Protector vs Zarsthor

The clearest difference is in-app purchases: Zarsthor at none against Rocket Protector's 3. Zarsthor also leads on ads (none vs shown) and update cadence (every 12 months vs every 24 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Rocket Protector sells 3 one-off in-app purchases. Zarsthor asks for nothing beyond the download.

Rocket Protector ships an update every 24 months, Zarsthor every 12 months. The most recent releases landed on August 18, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Rocket Protector | Zarsthor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/rocket-protector/id1410179786/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 24 months | **Every 12 months** |
| Monetization | Free with in-app purchases | — |
| Size | 42 MB | 48 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [ALEXEY KOZLOV](https://appshunter.io/developer/1393860478) | [Dominik Babiarz](https://appshunter.io/developer/1451894310) |

## What reviewers say

### Rocket Protector

[App page](https://appshunter.io/ios/app/rocket-protector/id1410179786)

Test your reflexes and precision by defending a planet from incoming asteroids. Launch rockets to destroy threats and upgrade your arsenal to survive longer. The goal is to see how long you can protect your world.

**Highlights:** Planet rotation via swipe, Rocket launching by tap, Asteroid destruction, Missile upgrades, Reaction and accuracy testing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |
| 100 mineral | $0.99 | one-time |
| 500 mineral | $1.99 | one-time |


### Zarsthor

[App page](https://appshunter.io/ios/app/zarsthor-asteroid-shooter/id6469375801)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Rocket Protector free?

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

### Is Zarsthor free?

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

### Do Rocket Protector or Zarsthor have ads?

Rocket Protector shows ads; Zarsthor does not.

### Which is updated more often, Rocket Protector or Zarsthor?

Rocket Protector ships an update every 24 months, and Zarsthor every 12 months. Most recently, Rocket Protector was updated on August 18, 2026 and Zarsthor on September 17, 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.*