UNDOK™ is the companion app for your compatible connected radio or speaker. Use UNDOK to connect your product to your wireless network, set it up and add more products to your home in the future.

UNDOK allows you to add multiple speakers to a multi-room zone to play music in sync around the house; or have your speakers play different music, and control all of them from the same app. Set the volume of the group or individual devices, play/pause, browse content in your DLNA compatible music libraries, and play internet radio stations from the built-in portal featuring over 20,000 stations and podcasts, all from within one app. UNDOK is also compatible with Spotify Connect so you can play your music directly from your Spotify app into your group of speakers. See for more details.

Other supported audio sources include line input, DAB, FM radio, Bluetooth. The sources displayed in UNDOK will depend on the functionality enabled in your audio device.

UNDOK is supported by a growing number of global audio manufacturers. Look for the ‘Powered by UNDOK’ logo in the product information.

What's New

Version 3.2.14

We are continuously trying to improve your experience with UNDOK and supported speakers. Please do not hesitate to reach out to our UNDOK team to report issues, suggest improvements or just say "Hi". This can be done using the feedback from within the app.
It's update contains bug fixes and improvements.

Ratings and Reviews

2.0 out of 5
24 Ratings
24 Ratings
JoeGrass ,

New versions, same bugs

I started using this early in 2018 with five Roberts S1s and I have been disappointed ever since. The UI isn’t intuitive, is slow and barely works. The big problem for me that I reported a bug about 8 months ago via every means I could find, but the developers don’t even respond.

Every time I pause a track on my DLNA server the play/pause button disappears and the only options is to skip forward to the next track. Same issue on 4 iOS devices, version after version is released with no fix. This should be pretty easy to resolve but the developer just doesn’t care.

wappinggeoff ,

Big issue but can be solved...

The important bit: to find you speaker again after setting up:
Press mode to purple light - internet radio - bingo. Speaker reappears. No need to set up all over again.

Read on.

Ok, so got a great deal on Roberts S1 speakers. Downloaded app, all goods. Sounds great.

Then reopen app to change equaliser... no longer can find speaker I just set up. Aaaagh!!! But..

Read enough reviews below and. The answer is hidden away.

Press mode to purple light - internet radio - bingo. Speaker reappears. No need to set up all over again. Make changes, swap back to input that you want.

Painful, but allows it to work with Alexa which is all I want it to do, and not needed very often this way.

Hope this helps.

rrttedffffg ,

You ask for feedback but.....

The app is ok but not good.

My suggestion is to respond to the ideas of your users. I made a number of suggestions over a year ago about the user interface which could do with a major re-think. Employ a user interface person to re-design the ergonomics to suit the users?

Also, an Apple Watch app would be just great.


Frontier Silicon Ltd
73.2 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad and iPod touch.
English, Bulgarian, Czech, Danish, Dutch, French, German, Greek, Italian, Norwegian Bokmål, Polish, Romanian, Slovak, Spanish, Swedish
Age Rating
Rated 4+
© Frontier Silicon, 2016. All rights reserved.


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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