FlowCheck vs Duct Sensor Assistant
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
Duct Sensor Assistant
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Via the Belimo Duct Sensor Assistant App it is possible to extend the range of use and to adapt the configuration individually to application requirements. A Bluetooth® dongle is required for configuration via the Belimo Duct Sensor Assistant App (sold separately, A-22G-A05). Features: • Communication via Bluetooth BLE • Bluetooth Dongle A-22G-A05 required, which will communicate with the sensor via a Micro-USB-connector • Can be used for the following sensors: 22ADP-.., 22DTH-..5.., 22DTH-..6.., 22DC-..3, 22DTC-.., 22DTM-.., 22DCV-.., 22DCM-.., 22DCK-.., 22UTH-..50X, 22UTH-..60X • Supported languages DE, EN, FR, IT, ES, PT Configuration options: • Individual configuration of output signals • Setting of different measuring ranges • Additional adjustment of offset values • Parameterization of Live-Zero-Signal (2..10 V etc.) and the system of units • Setting options for display indications • Customized parameterization of traffic-light function (TLF) • Extension of the physical bus address • Store settings on the mobile device and load on other sensors • Representation and output of the differential pressure as a volume flow value
Screenshots
Verdict
The clearest difference is update cadence: Duct Sensor Assistant at every 6 months against FlowCheck's every 15 months. Duct Sensor Assistant also leads on iOS requirement (12.0 vs 16.0). 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.
FlowCheck ships an update every 15 months, Duct Sensor Assistant every 6 months. The most recent releases landed on September 9, 2026 and September 16, 2026 respectively.
| Parameter | FlowCheck | Duct Sensor Assistant |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 15 months | Every 6 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 15 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | TROX GmbH | BELIMO Automation AG |
In-app purchases
FlowCheck
No in-app purchases
Duct Sensor Assistant
No in-app purchases
Questions
Is FlowCheck free?
Is Duct Sensor Assistant free?
Do FlowCheck or Duct Sensor Assistant have ads?
Which is updated more often, FlowCheck or Duct Sensor Assistant?
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