Turn your Desktop & Mobile Device into a Walkie-Talkie.

Fields of Application.

Bring your own device & use existing WiFi networks.


Offline audio streaming at events. Save time and money, use your inhouse WiFi.


Specific communication from room to room via mobile devices and desktops. No annoying loudspeaker announcements anymore.


Easily coordinate your catering-team and save yourself time. A happy team makes even happier guests.


No signal at your warehouse? No problem - our technology enables offline communication for easy coordination and fast operations.


Walkie-Talkies cover whole channels - not everyone has to listen in! Communicate from cash desk to dressing room and storage, by just one click.


Stressed voice? Comfortable inhouse communication between floors and rooms.

How to get FLUX started.

Just a few easy steps.

Download FLUX for mobile devices. For Desktop version please contact us.

Visit our Booking Store, to purchase licences for your individual period up to two years.

Join the same local, LINEAPP ready WiFi network.

Open FLUX and start your conversation.

FLUX Benefits.

Worldwide first local audio intercom solution without internet.


Peer-to-Peer based realtime Intercom System with an automated network discovery.


Bring your own device. Our software works on iOS and Android devices, as well as MAC OS and Windows desktops. Mix and match all devices among each other, just as you like.


Enjoy conversations in half, full or multi full duplex with best hifi quality and low delays.


We make offline communication possible. Our system is designed to work entirely without any internet or mobile data connection.

FLUX features.

We take communication to the next level.

Push-to-Talk by just one click

Use any headset and operate via remote control

Multi duplex within all devices

Listen only function

Automated reconnection if WiFi is lost

Decide with whom you want to talk with

Create Groups easily via drag and drop

FLUX runs in the background on your device


Contact us to get your trial licence.



up to 2 users.

You + 1 other person can try LINEAPP for free. We welcome any kind of feedback.

  • Push-To-Talk
  • Permanent (full duplex)
  • Automatic Connection



starting price for 72h licence.

We offer other kinds (72h, week, month and year) of licences and time periods as well.

  • Unlimited Users
  • Group Function
  • Listen Only
  • Audio Assistant
  • Lockscreen Information
  • Transfer Licences
  • Ad Free



Express your ideas.

Tell us, what you want to have - we develop it for you!

  • Custom Branding/Themes
  • Desktop Version
  • Integration into other Systems
  • etc.