# DFM CDE vs Duct Sensor Assistant

The clearest difference is iOS requirement: DFM CDE at 8.0 against Duct Sensor Assistant's 12.0. 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.

DFM CDE ships an update every 4 months, Duct Sensor Assistant every 6 months. The most recent releases landed on October 9, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | DFM CDE | Duct Sensor Assistant |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 6 months |
| Size | 46 MB | 31 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Digital Facilities Management Ltd](https://appshunter.io/developer/1767571840) | [BELIMO Automation AG](https://appshunter.io/developer/1149281298) |

## What reviewers say

### DFM CDE

[App page](https://appshunter.io/ios/app/dfm-cde/id1500254537)

**Features:** macOS Compatibility

**In-app purchases:** none


### Duct Sensor Assistant

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DFM CDE free?

DFM CDE 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 DFM CDE or Duct Sensor Assistant have ads?

Neither DFM CDE nor Duct Sensor Assistant shows ads.

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

DFM CDE ships an update every 4 months, and Duct Sensor Assistant every 6 months. Most recently, DFM CDE was updated on October 9, 2026 and Duct Sensor Assistant on October 6, 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.*