Comparison

FlowCheck vs Duct Sensor Assistant

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

Head to head
About

FlowCheck

Features
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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.

About

Duct Sensor Assistant

Features
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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

FlowCheck4 screens
Duct Sensor Assistant4 screens

Verdict

The call

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

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

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.

Scorecard2 real differences · 4 level
FlowCheck versus Duct Sensor Assistant: the parameters behind the verdict, then further details
ParameterFlowCheckDuct Sensor Assistant
PriceFreeFree
Update frequencyEvery 15 monthsEvery 6 months — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.012.0 — better
Further details — not scored
Size15 MB31 MB
Age rating4+4+
DeveloperTROX GmbHBELIMO Automation AG

In-app purchases

None

FlowCheck

No in-app purchases

None

Duct Sensor Assistant

No in-app purchases

Questions

Is FlowCheck free?
FlowCheck is free to download, with no in-app purchases.
Is Duct Sensor Assistant free?
Duct Sensor Assistant is free to download, with no in-app purchases.
Do FlowCheck or Duct Sensor Assistant have ads?
Neither FlowCheck nor Duct Sensor Assistant shows ads.
Which is updated more often, FlowCheck or Duct Sensor Assistant?
FlowCheck ships an update every 15 months, and Duct Sensor Assistant every 6 months. Most recently, FlowCheck was updated on September 9, 2026 and Duct Sensor Assistant on September 16, 2026.

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