# Duct Sensor Assistant vs adz

The clearest difference is iOS requirement: Duct Sensor Assistant at 12.0 against adz's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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, adz every 4 months. The most recent releases landed on September 16, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Duct Sensor Assistant | adz |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 4 months** |
| Size | 31 MB | 20 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BELIMO Automation AG](https://appshunter.io/developer/1149281298) | [arcade solutions ag](https://appshunter.io/developer/1105330983) |

## What reviewers say

### Duct Sensor Assistant

[App page](https://appshunter.io/ios/app/duct-sensor-assistant/id1559862597)

**Features:** macOS Compatibility

**In-app purchases:** none


### adz

[App page](https://appshunter.io/ios/app/adz/id1634024819)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Duct Sensor Assistant free?

Duct Sensor Assistant is free to download, with no in-app purchases.

### Is adz free?

adz is free to download, with no in-app purchases.

### Do Duct Sensor Assistant or adz have ads?

Neither Duct Sensor Assistant nor adz shows ads.

### Which is updated more often, Duct Sensor Assistant or adz?

Duct Sensor Assistant ships an update every 6 months, and adz every 4 months. Most recently, Duct Sensor Assistant was updated on September 16, 2026 and adz on September 9, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*