# TwinCAT IoT Communicator vs MQTT

The clearest difference is update cadence: TwinCAT IoT Communicator at every 2 months against MQTT's every 11 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.

TwinCAT IoT Communicator ships an update every 2 months, MQTT every 11 months. The most recent releases landed on October 14, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | TwinCAT IoT Communicator | MQTT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/twincat-iot-communicator/id1113995901/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 11 months |
| Monetization | Free | — |
| Size | 116 MB | 2 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Beckhoff Automation GmbH](https://appshunter.io/developer/859883375) | [Marco Gasser](https://appshunter.io/developer/1625108046) |

## What reviewers say

### TwinCAT IoT Communicator

[App page](https://appshunter.io/ios/app/twincat-iot-communicator/id1113995901)

Easily transmit process data from TwinCAT controllers to various devices, monitor status changes, and send information back to machines. This tool connects your controller to a messaging service for seamless communication between PLC and mobile operating systems.

**Highlights:** Transmit process data, Monitor status changes, Send information back to machine, Connect TwinCAT controller to messaging service, Publish-subscribe pattern integration, Easy IT network integration

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

**In-app purchases:** none


### MQTT

[App page](https://appshunter.io/ios/app/mqtt-client/id6443841176)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TwinCAT IoT Communicator free?

TwinCAT IoT Communicator is free to download, with no in-app purchases.

### Is MQTT free?

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

### Do TwinCAT IoT Communicator or MQTT have ads?

Neither TwinCAT IoT Communicator nor MQTT shows ads.

### Which is updated more often, TwinCAT IoT Communicator or MQTT?

TwinCAT IoT Communicator ships an update every 2 months, and MQTT every 11 months. Most recently, TwinCAT IoT Communicator was updated on October 14, 2026 and MQTT on October 24, 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.*