Elvis Viewer vs KNX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Elvis Viewer
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Elvis Viewer offers you the experience of running your house automation via iPad, iPod touch or iPhone. Monitoring, control and regulation within one finger tip ñ for all kinds of buildings whether they are private, public or industrial. Elvis Viewer is able to work with EIB/KNX but additionally diverse different process ports. Common systems like OPC, M-Bus, Modbus, DMX-512, DLNA (Multi-Media) and many more can be connected with simple methods. Where to use Elvis Viewer can be designed for all needs of the building automation; Lighting, Control of Diods (DMX), Heating and Air Conditioning, Shading, Multi Media, Web Cam Monitoring and of course showing the current states of controls. Requirements Elvis Viewer is ready to work after it is designed with help of the ElvisDesigner. In ElvisDesigner the look and functionality is defined. Elvis Viewer provides to display the control page and to communicate with the system. All devices from iOS-Version 4.3 on are supported. And you can create portrait and landscape views of course. To learn more about ElvisDesigner and how to get started with Elvis Viewer visit our web site where you can download the ElvisDesigner as well http://www.it-gmbh.de. For further questions you can contact us via phone +49 911 5183490 or e-mail support@it-gmbh.de.
KNX
Transform your smartphone or tablet into a comprehensive remote control for your home or office building functions. Easily manage lights, shutters, climate, and more with an intuitive interface. Personalize settings like function names and symbols for a tailored experience.
- Intuitive operating concept
- Scene call via widget
- Rapid navigation
- Personalized settings
- Freely definable scenes
- Intelligent self-configuration
- Remote control in WiFi networks
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Note: This app can only be used in conjunction with the discontinued KNX/App interface V1. The app will remain available for approximately 2 more years. ***The modern type of remote control*** The innovative Feller KNX app turns smartphones and tablets into a remote control for all building functions. Thanks to its clear and easy to understand intuitive operating concept, lights, shutters, climate and much more can be controlled very simply. The user can adapt the KNX app to their individual needs, for example, rename functions or assign appropriate symbols etc. Fast navigation is guaranteed by favorites, function groups and rooms. ***Purpose*** The KNX app is used as a remote control in homes and to control functions in individual rooms or whole parts of the building. In offices, meeting rooms or training rooms, the new KNX app can be used to conveniently control presentations when combined with a tablet. In hotels, guests can, for example, control the functions in their hotel room using their own mobile device. ***App features*** • Easy, intuitive KNX app operating concept • Scene call via widget • Rapid navigation through favourites, rooms or functions • Saves time through personal settings, such as function names, symbols, order • Saves costs thanks to freely definable scenes • Saves costs thanks to intelligent self-configuration when you first start up the KNX app. • Remote control in WiFi networks (remote access in planning) • Demo version, runs without the KNX/app interface ***Hardware features*** • Simple product concept • KNX/app interface to connect app to LAN and KNX • Fast configuration within ETS4 (no plug-in!) • 12 rooms can be configured with 12 functions each • Does not require much space in the control cabinet 2TE • Supports a max. of 5 access at the same time • 5 different user rights • chargeable, available from your electrican, E-No 405 831 000 ***Operating systems*** • iOS 8 and higher ***Formats*** • iPhone / iPod Touch: portrait • iPad: portrait and landscape ***More Informations*** • http://www.feller.ch/Produktangebot/Gebaeudeautomation/Gebaeudeautomation-KNX • http://clixx.feller.ch/download/index.php?menueidLev1=279&menueidLev2=327
Screenshots
Verdict
The clearest difference is update cadence: Elvis Viewer at every 2 months against KNX's every 9 months. Elvis Viewer also leads on iOS requirement (9.1 vs 13.0). 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.
Elvis Viewer ships an update every 2 months, KNX every 9 months. The most recent releases landed on October 1, 2026 and October 10, 2026 respectively.
| Parameter | Elvis Viewer | KNX |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 months — better | Every 9 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.1 — better | 13.0 |
| Further details — not scored | ||
| Size | 139 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | IT Gesellschaft fuer Informationstechnik mbH | Feller AG |
In-app purchases
Elvis Viewer
No in-app purchases
KNX
No in-app purchases









