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 3.3.10

We are continuously trying to improve your experience with UNDOK and supported speakers.
The latest version contains bug fixes and improvements

Ratings and Reviews

4.0 out of 5
5 Ratings

5 Ratings

Roman Menyhart ,

Works fine

This is the only app that will control your Numan Hi-Fi. Nothing to write home about, but works perfectly and never crashes.

The odd man out ,

Works Great

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.

JayDeeWest ,

Doesn't Connect; simplistic; uninformative

Won't connect with my iPhone 7+ even though they they are on the same WiFi network and gives no indication why. There seems to be maybe two pages on the app and they don't do anything. Useless.


Frontier Silicon Ltd
72.8 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 Smart Technologies, 2019. All rights reserved.


  • Family Sharing

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

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