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.

Troubleshooting: no sound, echo or no devices

Updated 29 October 2026

Almost every problem with Allsono comes down to the network, a missing permission or an app that doesn't share its sound. Go through these points.

The devices can't see each other

Check that every device is on exactly the same Wi-Fi network, not a guest network. Guest networks often keep devices from seeing each other.
Turn off any VPN for a moment; it can hide the local network.
On an iPhone: allow "Local Network" for Allsono in Settings → Privacy & Security → Local Network.
A Mac as a speaker: in System Settings, turn on "AirPlay Receiver" and set "Allow AirPlay for" to anyone on the same network. Otherwise the source can't see the Mac as a speaker.

Connected, but no sound

Mac as the source: give Allsono permission to record system audio. Without it there is nothing to share.
Android as the source: do you see "This app doesn't share its sound"? Then that app blocks capturing its sound. Spotify does; use a Mac as the source instead.
iPhone as the source: check that the broadcast is running (red bar or icon at the top). Music from Apple Music can't be shared.
Is the volume on the speaker itself turned up? On Android you can choose under "Sound on this phone" whether the phone also plays in silent mode.

I hear an echo

Is an iPhone the source? It runs slightly ahead itself, because iOS doesn't let apps delay other apps' sound. Mute that iPhone or make a Mac the source.
Is a Bluetooth speaker attached to a device? Allsono accounts for its delay, but every speaker is different. Adjust with "Fine-tune": if it runs ahead, choose +; if it runs behind, choose −.
Is the same music also playing somewhere else, for example on a smart speaker? Turn that off; Allsono can only keep its own speakers in time.

The sound stutters

Stuttering is almost always caused by a busy or weak Wi-Fi network. Allsono then enlarges its buffer by itself; after a few seconds it usually settles.
Move the devices closer to the router, or use the 5 GHz network if your router has one.
Large downloads or video calls on the same network can interfere for a moment.

Still not working?

Send us a message through the contact form, with the type of device and the app version (shown in the settings). Then we'll take a look with you.

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

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