Comparison

smartHMI vs TANGRAM IoT 3.0

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

Head to head

About

smartHMI

Read full description

smartHMI mobile enables commissioning, operation and service of supported Siemens HVAC control systems. The app provides a mobile user interface for monitoring and managing connected systems throughout their lifecycle. The application includes sample dashboards and plant views for common HVAC applications. These can be exported, customized outside the app and re-imported to support additional system types and use cases. Features: . Connect locally via TCP/IP or USB, or remotely through Siemens cloud services. . Monitor system operation using application-specific graphics and dashboards. . Access and adjust controller functions from your mobile device. . Review active alarms and historic alarms. . Analyze trends and operational data. . Activate and deploy licenses to supported controllers.

About

TANGRAM IoT 3.0

Read full description

Collect data through each respective sensors, record into TANGRAM. Use communication interface such as WiFi/BLE/NB-IoT/4G to send data back to TANGRAM IoT Cloud. Provide users with value by processing large amounts of data through the analysis platform complemented by its domain knowledge.

Screenshots

smartHMI4 screens

TANGRAM IoT 3.04 screens

Verdict

The call

The clearest difference is update cadence: TANGRAM IoT 3.0 at every 3 weeks against smartHMI's every 7 months. smartHMI's advantage is iOS requirement (12.0 vs 15.6). 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

smartHMI ships an update every 7 months, TANGRAM IoT 3.0 every 3 weeks. The most recent releases landed on October 16, 2026 and October 24, 2026 respectively.

Scorecard2 real differences · 4 level

smartHMI versus TANGRAM IoT 3.0: the parameters behind the verdict, then further details
Parameter	smartHMI	TANGRAM IoT 3.0
Price	Free	Free
Update frequency	Every 7 months	Every 3 weeks — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	12.0 — better	15.6
Further details — not scored
Size	115 MB	56 MB
Age rating	17+	4+
Developer	Siemens AG	TANGRAM Company Limited.

In-app purchases

None

smartHMI

No in-app purchases

None

TANGRAM IoT 3.0

No in-app purchases

Questions

Is smartHMI free?

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

Is TANGRAM IoT 3.0 free?

TANGRAM IoT 3.0 is free to download, with no in-app purchases.

Do smartHMI or TANGRAM IoT 3.0 have ads?

Neither smartHMI nor TANGRAM IoT 3.0 shows ads.

Which is updated more often, smartHMI or TANGRAM IoT 3.0?

smartHMI ships an update every 7 months, and TANGRAM IoT 3.0 every 3 weeks. Most recently, smartHMI was updated on October 16, 2026 and TANGRAM IoT 3.0 on October 24, 2026.