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 3.3.15

Improvements related to compatibility between iOS 13 and Undok application

Ratings and Reviews

1.7 out of 5
192 Ratings

192 Ratings

Dilafc ,

Should face legal proceedings

Reading the reviews, and the total lack of responsibility taken by the developers, I wonder just how many people have lost a great deal of money buying speaker systems rendered unfit for purpose. Although I have not yet looked into it, I would guess that the reliance of Roberts multi-room systems on an app (Undock) which, at best, works intermittently would be in breach of the Sales of Goods Act. Equally, I wouldn’t be surprised if Roberts’ decision to cease production, and direct sales of existing stock, of their multi-room product range, resulted from the weakness of the app. The thing I personally consider to be a total disgrace is that, when the developers occasionally respond to the plethora of disappointed users, they simply suggest updating to the latest version of their app, despite the persistence of numerous problems and bugs. In my opinion, Undock is seriously damaging the Roberts brand. Not sure if a class action to compensate consumers of Roberts multi-room systems would be taken against Roberts or Undock. In any case, I imagine the developers would either choose to ignore it or otherwise suggest that everyone “updates to the latest version”.

FatJim ,

A very disappointing weak link.

Like many other reviewers I have some Roberts s1 and s2 speakers which are great, and I use with a media server which streams my mp3s. Annoyingly, To set the speakers up up and remotely control volumes I have to use this. It frequently drops connections to the speakers and the latest version seems to have done away with playback controls (why anyone one would think these were unnecessary is beyond me) For selecting and playing media I use other much better dlna /upnp software, but have to go back to this if I need to mute a speaker or edit a group. It seems almost as if the developers don’t expect anyone to play anything other than internet radio streams (which it does moderately well).

Pendergo ,

Works well with radio

I got this app to play music from my phone on our radio. It works extremely well despite what others are saying. My only issues are:
>sometimes there is a long buffering pause after each song for around 30 seconds.
>sometimes the app says it hasn’t permission to view my music library when it really does. A restart of the app fixes this.

Overall a great app to control your radio and play music. There are great features such as being able to turn it on and off and being able to update the radio remotely and the list continues. Great app!


Frontier Silicon Ltd
80.5 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


  • Family Sharing

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

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