Duct Sensor Assistant vs Elvaco OTC
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
Elvaco OTC
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The Elvaco OTC App makes configuring and deployment of your devices easy! Features of Elvaco OTC App: - Claim devices and associated keys to your user account. - Scan and write settings to your devices. - Create configuration profiles to facilitate deployment and configuration. - Lock your devices to prevent unauthorized access. Do you have questions or feedback about the app? Feel free to contact info@elvaco.se
Screenshots
Verdict
The clearest difference is update cadence: Elvaco OTC at monthly against Duct Sensor Assistant's every 6 months. Duct Sensor Assistant's advantage is iOS requirement (12.0 vs 15.0). 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, Elvaco OTC monthly. The most recent releases landed on September 16, 2026 and September 23, 2026 respectively.
| Parameter | Duct Sensor Assistant | Elvaco OTC |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 31 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | BELIMO Automation AG | Elvaco AB |
In-app purchases
Duct Sensor Assistant
No in-app purchases
Elvaco OTC
No in-app purchases
Questions
Is Duct Sensor Assistant free?
Is Elvaco OTC free?
Do Duct Sensor Assistant or Elvaco OTC have ads?
Which is updated more often, Duct Sensor Assistant or Elvaco OTC?
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