# KNX APP vs PrimoAire

The clearest difference is review sentiment: PrimoAire at 100% against KNX APP's 26%. PrimoAire also leads on rating (5.0 vs 1.0) and iOS requirement (13.0 vs 15.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PrimoAire holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 26% of KNX APP's written reviews are positive against 100% of PrimoAire's.

KNX APP ships an update every 5 months, PrimoAire every 9 months. The most recent releases landed on October 18, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | KNX APP | PrimoAire |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (2 ratings)](https://appshunter.io/ios/app/knx-app-control/id1099217049/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/primoaire/id1636626001/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | 26.1% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 9 months |
| Monetization | Free | Free |
| Size | 105 MB | 33 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Busch-Jaeger Elektro GmbH](https://appshunter.io/developer/542311466) | [PrimoAire LLC](https://appshunter.io/developer/1636626003) |

## What reviewers say

### KNX APP

[App page](https://appshunter.io/ios/app/knx-app-control/id1099217049)

Control your home or office remotely with custom scenes and time programs. Manage lighting, temperature, security, and more. Offers live previews, camera control, and push notifications for alarms.

**Highlights:** Custom scene creation, Time program management, Lighting and blind control, Temperature management, IP camera pan, tilt, zoom, Alarm notifications, PIN page protection

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### PrimoAire

[App page](https://appshunter.io/ios/app/primoaire/id1636626001)

Monitor your home's air quality in real-time with this app. Track changes and control connected devices to improve your indoor environment.

**Highlights:** Real-time air quality tracking, Control third-party devices, Monitor home air quality, Improve indoor environment

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KNX APP free?

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

### Is PrimoAire free?

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

### Which has better reviews, KNX APP or PrimoAire?

PrimoAire is rated higher. KNX APP averages 1.0 out of 5 from 2 ratings, while PrimoAire averages 5.0 from 1 ratings.

### Do KNX APP or PrimoAire have ads?

Neither KNX APP nor PrimoAire shows ads.

### Which is updated more often, KNX APP or PrimoAire?

KNX APP ships an update every 5 months, and PrimoAire every 9 months. Most recently, KNX APP was updated on October 18, 2026 and PrimoAire on October 7, 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.*