dxLink21 vs FlowCheck
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
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.
FlowCheck
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Full transparency at all times about your TROX drive solution and the operation of your system. The TROX Flow Check app turns your smartphone into a wireless on-site control for the latest generation of VAV, flap and valve actuators! Efficient commissioning, quick functional testing in operation, handy and always ready for service. Easily adapt when used. Document and send the setting and operating data.
Screenshots
Verdict
The clearest difference is update cadence: dxLink21 at every 3 months against FlowCheck's every 15 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.
dxLink21 ships an update every 3 months, FlowCheck every 15 months. The most recent releases landed on September 1, 2026 and September 9, 2026 respectively.
| Parameter | dxLink21 | FlowCheck |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months โ better | Every 15 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod โ better | iPhone, iPad |
| Requires iOS | 15.0 โ better | 16.0 |
| Further details โ not scored | ||
| Size | 134 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Belparts NV | TROX GmbH |
In-app purchases
dxLink21
No in-app purchases
FlowCheck
No in-app purchases









