Elvis Viewer vs zeptrion
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.
zeptrion
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***Contemporary remote control*** Feller's innovative zeptrion App turns smartphones and tablets into a remote control for all Feller zeptrion light and blind functions. The straightforward and easily understandable operating concept makes child's play of controlling lighting and blinds. Users are able to adapt the zeptrion App to suit their individual needs, for example rename functions or assign appropriate symbols and so on. Favourites, function groups and rooms guarantee quick and easy navigation. ***Purpose*** Feller's zeptrion App is designed to allow users to remotely control lights and blinds equipped with zeptrion WLAN devices. ***App features*** •Straightforward, intuitive Feller operating concept •Rapid navigation via favourites, rooms and functions •Time-saving personal settings such as function names, symbols, sequences •User definable scenes for sophisticated flexibility •Demo version possible (no WLAN connection) •Create your own favourites and scenes ***Hardware features*** •The zeptrion App works in the same WLAN-based home network as the Feller zeptrion WLAN devices intermediate module 2C and extension unit 4C •zeptrion WLAN intermediate module 2C: easy to install between cavity back boxes and face plate sets, compatible with all zeptrion inserts from 2008 and onwards •zeptrion WLAN extension unit 4C: extension unit, max. 4 channels •Feller zeptrion WLAN devices are available from professional electrical outlets *** Formats*** •iPhone / iPod Touch: portrait orientation •iPad: portrait and landscape orientation
Screenshots
Verdict
The clearest difference is update cadence: Elvis Viewer at every 2 months against zeptrion's every 6 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, zeptrion every 6 months. The most recent releases landed on October 1, 2026 and October 3, 2026 respectively.
| Parameter | Elvis Viewer | zeptrion |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.1 — better | 13.0 |
| Further details — not scored | ||
| Size | 139 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | IT Gesellschaft fuer Informationstechnik mbH | Feller AG |
In-app purchases
Elvis Viewer
No in-app purchases
zeptrion
No in-app purchases









