# Z vs Bistum Sitten

The clearest difference is update cadence: Z at every 2 weeks against Bistum Sitten's every 4 months. Z also leads on iOS requirement (12.0 vs 15.6). 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.

Z ships an update every 2 weeks, Bistum Sitten every 4 months. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Z | Bistum Sitten |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 4 months |
| Size | 21 MB | 46 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [EIBROM GmbH](https://appshunter.io/developer/478284408) | [Diocèse de Sion](https://appshunter.io/developer/1746952962) |

## What reviewers say

### Z

[App page](https://appshunter.io/ios/app/z-control-v1/id1457959286)

**In-app purchases:** none


### Bistum Sitten

[App page](https://appshunter.io/ios/app/bistum-sitten/id6502835653)

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

**In-app purchases:** none


## Frequently asked questions

### Is Z free?

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

### Is Bistum Sitten free?

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

### Do Z or Bistum Sitten have ads?

Neither Z nor Bistum Sitten shows ads.

### Which is updated more often, Z or Bistum Sitten?

Z ships an update every 2 weeks, and Bistum Sitten every 4 months. Most recently, Z was updated on November 2, 2026 and Bistum Sitten on October 30, 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.*