# stacz vs Blastrix

The clearest difference is in-app purchases: Blastrix at none against stacz's 1. Blastrix also leads on update cadence (every 4 days vs every 3 weeks). stacz's advantage is iOS requirement (15.0.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. stacz sells 1 one-off in-app purchase. Blastrix asks for nothing beyond the download.

stacz ships an update every 3 weeks, Blastrix every 4 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | stacz | Blastrix |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Size | 39 MB | 114 MB |
| Requires iOS | **15.0.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Stefan Hillbrand](https://appshunter.io/developer/1662267192) | [Gal Steinberg](https://appshunter.io/developer/1886221333) |

## What reviewers say

### stacz

[App page](https://appshunter.io/ios/app/stacz-falling-block-puzzle/id6755625330)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $3.99 | one-time |


### Blastrix

[App page](https://appshunter.io/ios/app/blastrix-falling-block-puzzle/id6760786198)

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

**In-app purchases:** none


## Frequently asked questions

### Is stacz free?

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

### Is Blastrix free?

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

### Do stacz or Blastrix have ads?

Both stacz and Blastrix show ads.

### Which is updated more often, stacz or Blastrix?

stacz ships an update every 3 weeks, and Blastrix every 4 days. Most recently, stacz was updated on October 30, 2026 and Blastrix 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.*