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 3.1.8

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 to say "hi". This can be done using the feedback form within the app.

Kind regards,

Ratings and Reviews

2.8 out of 5

5 Ratings

5 Ratings

No Longer Finds My Roberts Radio


I’ve used this app for a few years. It used to work fine with my Roberts Radio. It no longer finds it. Yes, I’m on the same WiFi network. Also, not easy to find customer support so I’ve got to leave a review. Such a shame because the app is really top notch when it works. I’ll update this if it starts working again.



Yup. As usual: an update to allow for features I don’t use has messed the whole set-up. Can’t use my internet radio anymore. They should really warn you if an update will oblige you to do set-up again. Oh well. I survived without this app before.

Works Great

The odd man out

Works great on my new Sangean WFR 28. Had been using the new radio for a few days, got my account set up on Frontier (no cost) and decided to try this app. It worked instantly. It immediately saw my radio and I pushed the button to select it and all my favorites that I had selected on Frontier website were there. It's nice when things just work.


Frontier Silicon Ltd
66.4 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

    With Family Sharing set up, up to six family members can use this app.

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