Comparison

TwinCAT IoT Communicator vs MQTT

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

TwinCAT IoT Communicator

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
Read full description

The TwinCAT 3 IoT Communicator ("TF6730") makes it possible to easily transmit process data to multiple end devices, monitor status changes and send information back to the machine. The TwinCAT 3 IoT Communicator connects the TwinCAT controller to a messaging service, making it easy to set it up within the TwinCAT engineering environment to send and receive messages between the PLC and mobile operating systems. Since the TwinCAT 3 IoT Communicator is based on the publish-subscribe pattern, it does not require any special firewall settings but can be easily integrated into an existing IT network. More information: http://www.beckhoff.com/TF6730 http://www.beckhoff.com/TF6735

About

MQTT

Features
Read full description

The app has a control range with the ability to control between zero and five lights and doors, depending on the use case. By means of a red-green indicator, the user is shown the connection status of the server. In the settings area of the app the server connection details can be entered. Depending on the use case, the controls for the lights or doors can be switched on and off. For the individual lights and doors, the corresponding theme as well as the message can be set. In addition, further settings for the transmission can be selected.

Screenshots

TwinCAT IoT Communicator4 screens
MQTT4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

TwinCAT IoT Communicator ships an update every 2 months, MQTT every 11 months. The most recent releases landed on August 10, 2026 and September 12, 2026 respectively.

Scorecard1 real difference · 8 level
TwinCAT IoT Communicator versus MQTT: the parameters behind the verdict, then further details
ParameterTwinCAT IoT CommunicatorMQTT
PriceFreeFree
Rating5.0 (4 ratings) — better—
Number of ratings4 — better—
Update frequencyEvery 2 months — betterEvery 11 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.015.0
Further details — not scored
Size116 MB2 MB
Age rating4+4+
DeveloperBeckhoff Automation GmbHMarco Gasser

In-app purchases

None

TwinCAT IoT Communicator

No in-app purchases

None

MQTT

No in-app purchases

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 August 10, 2026 and MQTT on September 12, 2026.

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