# Trotec Control vs Crown Centrex

The clearest difference is update cadence: Trotec Control at every 3 months against Crown Centrex'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.

Trotec Control ships an update every 3 months, Crown Centrex every 6 months. The most recent releases landed on October 7, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Trotec Control | Crown Centrex |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 6 months |
| Monetization | — | Free |
| Size | 26 MB | 32 MB |
| Requires iOS | 13.4 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Trotec GmbH & Co. KG](https://appshunter.io/developer/1301388797) | [Gamma Communications GmbH](https://appshunter.io/developer/1500711306) |

## What reviewers say

### Trotec Control

[App page](https://appshunter.io/ios/app/trotec-control/id1593208379)

**Features:** macOS Compatibility

**In-app purchases:** none


### Crown Centrex

[App page](https://appshunter.io/ios/app/crown-centrex/id1611135719)

Transform your smartphone into a mobile extension of your virtual PBX. Make and receive calls worldwide using your landline number for cost-efficient and mobile communication. Access all the features of your Gamma Cloud PBX system directly from your device.

**Highlights:** Smartphone as mobile PBX extension, Worldwide calls with landline number, Cost-efficient mobile calling, Access to PBX features, Gamma Cloud PBX integration

**Features:** Siri integration, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Trotec Control free?

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

### Is Crown Centrex free?

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

### Do Trotec Control or Crown Centrex have ads?

Neither Trotec Control nor Crown Centrex shows ads.

### Which is updated more often, Trotec Control or Crown Centrex?

Trotec Control ships an update every 3 months, and Crown Centrex every 6 months. Most recently, Trotec Control was updated on October 7, 2026 and Crown Centrex on October 6, 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.*