ZGuest vs KNX V2
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
ZGuest
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Z-Guest is the control application that will let you feel at home while traveling and during your stay at your hotel or any other accommodation. Z-Guest provides a simple and versatile communication interface between the hotel room guest and the in-room automation systems and appliance. The Z-Guest technology allows, among many other functions: customising the climate and lighting systems, controlling the playback of your own music through the hotel in-room audio system or requesting room service.
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 optionsβsuch as renaming functions or choosing symbolsβthe 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: β’ Presence simulation deters burglars before they act. β’ The timer function allows time-based control of devices. β’ With the smart button function, KNX switches can trigger app scenes. β’ Supports user rights management as defined by the system integrator, allowing different permissions for individual users. β’ Integration of the Solar Manager widget is possible. β’ Data export and import functionality. β’ Switch between different installations via the menu (e.g., apartment / holiday home). β’ 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: KNX V2 at every 4 months against ZGuest's every 31 months. ZGuest'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 Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ZGuest ships an update every 31 months, KNX V2 every 4 months. The most recent releases landed on October 26, 2026 and October 12, 2026 respectively.
| Parameter | ZGuest | KNX V2 |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 31 months | Every 4 months β better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 β better | 15.0 |
| Further details β not scored | ||
| Size | 24 MB | 56 MB |
| Age rating | 4+ | 4+ |
| Developer | Zennio | Feller AG |
In-app purchases
ZGuest
No in-app purchases
KNX V2
No in-app purchases









