Room Control vs dxLink21
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Room Control
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Mobile Room Control enables the control of light, temperature, blinds, ventilation and much more, depending on the respective building equipment in conjunction with the SAUTER Cloud. Information such as temperature, air quality, humidity etc. is also available at all times via the app. This solution is ideal for use in apartment buildings, boarding houses, luxury apartments, hotels and office buildings. Further possibilities are the sending of predefined incident notifications to the facility manager or the direct display of information pages on the web, such as canteen plans, current information from the caretaker, etc.
dxLink21
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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
Verdict
The clearest difference is update cadence: Room Control at every 5 weeks against dxLink21's every 3 months. 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Room Control ships an update every 5 weeks, dxLink21 every 3 months. The most recent releases landed on September 10, 2026 and September 1, 2026 respectively.
| Parameter | Room Control | dxLink21 |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 weeks โ better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 โ better | 15.0 |
| Further details โ not scored | ||
| Size | 42 MB | 134 MB |
| Age rating | 4+ | 4+ |
| Developer | Fr. Sauter AG | Belparts NV |
In-app purchases
Room Control
No in-app purchases
dxLink21
No in-app purchases









