Comparison

TC Mobile I/O vs dxLink21

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

Head to head
About

TC Mobile I/O

Control your TC MOBILE I/O X200 SMS relay with this application. It displays device status and sends commands, eliminating the need for manual SMS writing. Access datasheets and switch between German and English languages.

Highlights
  • Device status indication
  • Send switching commands
  • Eliminates manual SMS writing
  • Data sheet download
  • Multilingual support (German, English)
Features
Read full description

This app supports you in using the TC MOBILE I/O X200 SMS relay (firmware version 2.0 or later). It indicates the device status, and sends the switching commands โ€“ the manual writing of SMS is no longer necessary. Other functions and features: - Data sheet download - Languages: German, English

About

dxLink21

Features
Read full description

We innovate. Create. Together with you. A better climate. This App allows users to wirelessly connect to Belparts dynamx smart HVAC valves, used for heating and cooling applications in buildings. The user will be able to monitor the valve's activity and access data from the HVAC control process. Moreover it allows authorized users to configure the specific valve settings. There is no easier way to get your hydronic systems installed and properly commissioned than with the dynamx App! All the information you need is right there, on your smartphone or tablet. In dxLink21 App, authorized users can READS the basic settings and actual values of the valve. Additionally, they get access to advanced settings needed for commissioning of the valve. In order to receive the access, please contact your local representative for more information. ---------- Belparts is specialized in the development, production and marketing of components for the automation of HVAC systems (Heating, Ventilation, Air Conditioning) in buildings. Control valves, actuators, sensors and terminal controls are at the roots of its core competency. With the Dynamic Flow Networking concept, Belparts introduces a new method for the comfort control & energy management in buildings.

Screenshots

TC Mobile I/O4 screens
dxLink213 screens

Verdict

The call

The clearest difference is update cadence: dxLink21 at every 3 months against TC Mobile I/O's every 28 months. TC Mobile I/O's advantage is iOS requirement (11.0.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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

UpkeepUpdate frequency

TC Mobile I/O ships an update every 28 months, dxLink21 every 3 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard2 real differences ยท 6 level
TC Mobile I/O versus dxLink21: the parameters behind the verdict, then further details
ParameterTC Mobile I/OdxLink21
PriceFreeFree
Positive reviews100.0% of reviewsโ€”
Update frequencyEvery 28 monthsEvery 3 months โ€” better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeโ€”
DevicesiPhone, iPodiPhone, iPad, iPod โ€” better
Requires iOS11.0.0 โ€” better15.0
Further details โ€” not scored
Size12 MB134 MB
Age rating4+4+
DeveloperPhoenix Contact GmbH & Co. KGBelparts NV

In-app purchases

None

TC Mobile I/O

No in-app purchases

None

dxLink21

No in-app purchases

Questions

Is TC Mobile I/O free?
TC Mobile I/O is free to download, with no in-app purchases.
Is dxLink21 free?
dxLink21 is free to download, with no in-app purchases.
Do TC Mobile I/O or dxLink21 have ads?
Neither TC Mobile I/O nor dxLink21 shows ads.
Which is updated more often, TC Mobile I/O or dxLink21?
TC Mobile I/O ships an update every 28 months, and dxLink21 every 3 months. Most recently, TC Mobile I/O was updated on November 2, 2026 and dxLink21 on November 3, 2026.

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