# ZEN CAT vs Schadek

The clearest difference is update cadence: ZEN CAT at every 3 months against Schadek's every 6 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.

ZEN CAT ships an update every 3 months, Schadek every 6 months. The most recent releases landed on October 10, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | ZEN CAT | Schadek |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 6 months |
| Size | 160 MB | 23 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Zen SA Industria Metalurgica](https://appshunter.io/developer/1458783498) | [Metalurgica Schadek Ltda](https://appshunter.io/developer/1498765695) |

## What reviewers say

### ZEN CAT

[App page](https://appshunter.io/ios/app/zen-cat/id1292627092)

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

**In-app purchases:** none


### Schadek

[App page](https://appshunter.io/ios/app/schadek-catalogo-eletronico/id1587960658)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ZEN CAT free?

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

### Is Schadek free?

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

### Do ZEN CAT or Schadek have ads?

Neither ZEN CAT nor Schadek shows ads.

### Which is updated more often, ZEN CAT or Schadek?

ZEN CAT ships an update every 3 months, and Schadek every 6 months. Most recently, ZEN CAT was updated on October 10, 2026 and Schadek 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.*