MQTT vs TRE
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MQTT
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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.
TRE
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The TRE-Solutions Application is a graphical user interface of which provides at a glance views of key performance indicators in addition to the comprehensive real-time monitoring systems. The TRE-Solutions Application manages your smart PV plant anytime, anywhere. With the TRE-Solutions Application, installers and owners can view the operating status, real-time and historical data of the plant and energy production & consumption management. In addition, it enables installers to perform wizard local commissioning and convenient operation & maintenance through mobile phones. Download the TRE-Solutions App to experience more functions. Local Commissioning Communicates with the inverter or SmartLogger to perform local maintenance functions, such as device commissioning, parameter setting, log export, and software upgrade. Visualized Energy Management ·Real-time energy flow. ·Full visualization of power yield, revenues and social contribution. ·Module-level monitoring. Smart Operation & Maintenance ·The overall operation status of multiple plants obtained for quick faulty plants identification. ·Real-time alarms, faulty devices, handing suggestions and one-click navigation available for Mobile O&M. *Smart Operation & Maintenance is available only to installer.
Screenshots
Verdict
The clearest difference is update cadence: TRE at every 10 days 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
MQTT ships an update every 11 months, TRE every 10 days. The most recent releases landed on September 12, 2026 and September 26, 2026 respectively.
| Parameter | MQTT | TRE |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 11 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 2 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Marco Gasser | Trek2000 |
In-app purchases
MQTT
No in-app purchases
TRE
No in-app purchases









