# Asteroid Factorizer Math 2 vs Zarsthor

The clearest difference is update cadence: Asteroid Factorizer Math 2 at every 3 days against Zarsthor's every 12 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Asteroid Factorizer Math 2 ships an update every 3 days, Zarsthor every 12 months. The most recent releases landed on October 12, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Asteroid Factorizer Math 2 | Zarsthor |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 12 months |
| Size | 198 MB | 48 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Ralph DMello](https://appshunter.io/developer/883186543) | [Dominik Babiarz](https://appshunter.io/developer/1451894310) |

## What reviewers say

### Asteroid Factorizer Math 2

[App page](https://appshunter.io/ios/app/asteroid-factorizer-math-2/id1532866395)

**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 Asteroid Factorizer Math 2 free?

Asteroid Factorizer Math 2 is free to download, with no in-app purchases.

### Is Zarsthor free?

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

### Do Asteroid Factorizer Math 2 or Zarsthor have ads?

Neither Asteroid Factorizer Math 2 nor Zarsthor shows ads.

### Which is updated more often, Asteroid Factorizer Math 2 or Zarsthor?

Asteroid Factorizer Math 2 ships an update every 3 days, and Zarsthor every 12 months. Most recently, Asteroid Factorizer Math 2 was updated on October 12, 2026 and Zarsthor on October 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.*