How do I play music on several devices at once?

Install Allsono on every device, make one the source and choose "Use as speaker" next to the others. Allsono sends the sound over your Wi-Fi and keeps every device exactly in time.

Does Allsono work with Spotify?

Yes, with a Mac as the source: Spotify, YouTube, podcasts and other apps all share their sound. On Android, Spotify doesn't let other apps capture its sound; Allsono then tells you and keeps the sound on the phone itself. Send Spotify to your Mac with Spotify Connect instead and make the Mac the source. YouTube, YouTube Music and most other apps do work on Android. On iPhone, Apple Music can't be shared.

Can my iPhone be the source?

Yes, with one limit set by Apple: iOS doesn't let any app delay or mute the sound of other apps. All speakers then play exactly together, but the iPhone itself runs slightly ahead. Have a Mac? Then make the Mac the source: everything plays exactly together. With Spotify Connect or AirPlay you can still control the music on the Mac from your iPhone. Without a Mac, turn the iPhone itself down.

What about delay or echo?

All speakers play the same fragment at the same moment, within a few milliseconds on a good Wi-Fi network. Only an iPhone that is itself the source runs slightly ahead (see above). Allsono also measures and compensates for the delay of Bluetooth and AirPlay speakers.

The sound only travels over your own Wi-Fi network. Internet is only needed to sign in and check your subscription daily; offline, Allsono keeps working for up to three days.

Which devices does Allsono support?

Macs with macOS 14.2 or later, Android phones with Android 10 or later and iPhones with iOS 17 or later. You can mix them freely.

What does Allsono cost?

Nothing. Allsono is in beta and free: create an account and use the apps on all your devices. If that ever changes, we will let you know well in advance.

How to play Spotify on multiple devices at once

Updated 29 October 2026

Spotify itself can send the song to another device, but not to several devices at once, unless your speakers can form a group themselves. With a Mac as the source and Allsono, Spotify does play on all your devices at once.

What Spotify can do itself

With Spotify Connect you move playback to another device, such as your laptop, a smart TV or a speaker. That is handy, but it then plays on one device at a time.

Playing on several speakers at once only works if those speakers form a group themselves, for example a Sonos group or a group of Google Cast speakers. Phones and laptops can't do that.

Spotify on all your devices with a Mac as the source

Play Spotify on your Mac. You can also send it from your phone to the Mac with Spotify Connect and keep controlling it from there.
Make the Mac the source in Allsono.
Pick the phones and other Macs that should play along as speakers. They play exactly together with the Mac.

Android and iPhone as the source

Android: Spotify doesn't let other apps capture its sound. Allsono tells you and keeps the sound on the phone itself. Send Spotify to your Mac with Spotify Connect and make the Mac the source. YouTube, YouTube Music and most other apps do work on Android.
iPhone: most apps can share their sound through the iOS screen broadcast; Apple Music can't. As the source, the iPhone itself runs slightly ahead of the speakers, so turn it down or make a Mac the source.

Try it yourself
Allsono is in beta and free for Mac, Android and iPhone.

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