# Impulse One vs Zarsthor

The clearest difference is iOS requirement: Impulse One at 9.0 against Zarsthor's 12.0. On price, update cadence, ads 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.

Impulse One ships an update every 11 months, Zarsthor every 12 months. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Impulse One | Zarsthor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/impulse-one/id1001814482/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 11 months** | Every 12 months |
| Monetization | Free | — |
| Size | 301 MB | 48 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 12+ |
| Developer | [Kurt Dekker](https://appshunter.io/developer/680019078) | [Dominik Babiarz](https://appshunter.io/developer/1451894310) |

## What reviewers say

### Impulse One

[App page](https://appshunter.io/ios/app/impulse-one/id1001814482)

Pilot a spaceship to rescue stranded employees from a chaotic company. Navigate challenging environments with high gravity, timed conditions, and combat.

**Highlights:** Rescue stranded employees, Impulse-driven spaceship piloting, High gravity challenges, Timed conditions, Combat with incoming fire

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

**In-app purchases:** none


### Zarsthor

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Impulse One free?

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

### Is Zarsthor free?

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

### Do Impulse One or Zarsthor have ads?

Neither Impulse One nor Zarsthor shows ads.

### Which is updated more often, Impulse One or Zarsthor?

Impulse One ships an update every 11 months, and Zarsthor every 12 months. Most recently, Impulse One was updated on October 29, 2026 and Zarsthor on October 27, 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.*