# ISOTEC vs CZH Connect

The clearest difference is update cadence: CZH Connect at every 6 weeks against ISOTEC's every 3 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.

ISOTEC ships an update every 3 months, CZH Connect every 6 weeks. The most recent releases landed on September 18, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | ISOTEC | CZH Connect |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Size | 29 MB | 83 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ISOTEC GmbH](https://appshunter.io/developer/1476709702) | [Christliches Zentrum in Hannover e V](https://appshunter.io/developer/1583569882) |

## What reviewers say

### ISOTEC

[App page](https://appshunter.io/ios/app/isotec/id1476709703)

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

**In-app purchases:** none


### CZH Connect

[App page](https://appshunter.io/ios/app/czh-connect/id1583569880)

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

**In-app purchases:** none


## Frequently asked questions

### Is ISOTEC free?

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

### Is CZH Connect free?

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

### Do ISOTEC or CZH Connect have ads?

Neither ISOTEC nor CZH Connect shows ads.

### Which is updated more often, ISOTEC or CZH Connect?

ISOTEC ships an update every 3 months, and CZH Connect every 6 weeks. Most recently, ISOTEC was updated on September 18, 2026 and CZH Connect on September 16, 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.*