nomos system vs KNX V2
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
nomos system
Unify your smart home devices from various manufacturers into a single, intuitive application. Control lighting, climate, security, and more, regardless of brand or location, with this comprehensive IoT platform.
- Universal device compatibility
- Control smart home products
- IoT platform for automation
- Supports multiple protocols
- Voice service integration
- Remote access
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Connect the world your way. All you need is ONE app for your smart home. With the nomos system app and nomos system Controller hardware you control your smart home products regardless of the manufacturer and device type. No matter where you are. The nomos engine is an IoT platform for home and industrial automation. It combines various system and control protocols so that they can be operated together. These include free@home, Husqvarna/Gardena, KNX, Lutron, Matter, Miele, Netatmo, Nuki, Philips Hue, Sonos, Somfy, Wiser by Feller, Zeptrion, ZigBee, Z-Wave and many more. In addition, nomos system supports common voice services such as Alexa and Google Home. (nomos system Controller hardware is required!)
KNX V2
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With the updated Feller KNX app, lighting, blinds, climate control, and other functions can be conveniently operated via smartphone or tablet. Thanks to the new, intuitive design and customizable options—such as renaming functions or choosing symbols—the app offers flexible usability. Switching between favorites, rooms, scenes, and automations ensures quick and easy navigation. In residential settings, the KNX app serves as a remote control for managing functions in individual rooms or entire sections of a building. In offices, meeting rooms, or training spaces, the new KNX app can be used in combination with a tablet for convenient control during presentations. Your benefits: • Presence simulation deters burglars before they act. • The timer function allows time-based control of devices. • With the smart button function, KNX switches can trigger app scenes. • Supports user rights management as defined by the system integrator, allowing different permissions for individual users. • Integration of the Solar Manager widget is possible. • Data export and import functionality. • Switch between different installations via the menu (e.g., apartment / holiday home). • Live visualization provides real-time overview of window states, room temperatures, and operating modes. For more information about the KNX app or the KNX/App Interface V2, please contact your electrical installer or visit our website at feller.ch/knx. Note: This app is compatible with the KNX/App Interface V2, article number: 36141-00.REG.
Screenshots
Verdict
The clearest difference is update cadence: nomos system at weekly against KNX V2's every 4 months. KNX V2's advantage is iOS requirement (15.0 vs 17.0). 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.
nomos system ships an update weekly, KNX V2 every 4 months. The most recent releases landed on September 16, 2026 and August 27, 2026 respectively.
| Parameter | nomos system | KNX V2 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Weekly — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 57 MB | 56 MB |
| Age rating | 4+ | 4+ |
| Developer | nomos system | Feller AG |
In-app purchases
nomos system
No in-app purchases
KNX V2
No in-app purchases









