Duct Sensor Assistant vs FusionAir
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
FusionAir
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Innovative FusionAir Smart Sensor enhances building occupant experience, increases energy efficiency, and offers safe indoor air quality. The mobile app provides a remote mirroring experience to all FusionAir functions so that changes can be made without a need to touch the sensor, and can be used with a display less model. LED indications can be programmed in the strategy. One example could be to give clear feedback of the safety status in the room under various circumstances such as CO2 levels.
Screenshots
Verdict
The clearest difference is update cadence: Duct Sensor Assistant at every 6 months against FusionAir's every 12 months. FusionAir's advantage is iOS requirement (8.1 vs 12.0). 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.
Duct Sensor Assistant ships an update every 6 months, FusionAir every 12 months. The most recent releases landed on October 6, 2026 and November 7, 2026 respectively.
| Parameter | Duct Sensor Assistant | FusionAir |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 months — better | Every 12 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 8.1 — better |
| Further details — not scored | ||
| Size | 31 MB | 40 MB |
| Age rating | 4+ | 4+ |
| Developer | BELIMO Automation AG | Cylon Controls Limited |
In-app purchases
Duct Sensor Assistant
No in-app purchases
FusionAir
No in-app purchases
Questions
Is Duct Sensor Assistant free?
Is FusionAir free?
Do Duct Sensor Assistant or FusionAir have ads?
Which is updated more often, Duct Sensor Assistant or FusionAir?
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