SyncSpeaker

Works offline · Bluetooth only

One song.
Every speaker.
No Wi-Fi.

Turn your friends’ phones and your Mac into one sound system. The host sends the music over Bluetooth, and every device plays it at the same moment, even at the beach or in the car.

Download SyncSpeaker How it works

Free · Android 10+ · macOS 13+ · iPhone iOS 16+

Android
iPhone
+ JBL
Mac (host)
Same beat, same moment, on every device.

How it works

One device is the host and has the music. Everyone else joins as a speaker. No accounts, no internet, no pairing codes.

  1. Host a party

    Open SyncSpeaker, tap Host a party and add songs from your files (MP3, M4A, WAV).

  2. Friends tap Join

    Their phones find your party over Bluetooth. One tap and they’re connected, with clocks synced automatically.

  3. Press play

    The song is sent to every device, then all of them start together. The next song is sent while this one plays.

Big sound tip: connect a Bluetooth speaker to each phone. If one sounds a little late, move its Delay slider to the right until everything sounds like one speaker.

Download

Install it on every device that should play music: the host and all the speakers.

Android Your device

Android 10 or newer · 18 MB

  1. Tap Download APK and open the file.
  2. If asked, allow Install unknown apps for your browser.
  3. Open SyncSpeaker and allow Nearby devices.
Download APK v0.1.0

Mac Your device

macOS 13 or newer · Intel & Apple Silicon · 1.5 MB

  1. Download and unzip, then drag SyncSpeaker into Applications.
  2. The first time: right-click → Open → Open (the app isn’t notarized yet).
  3. Allow Bluetooth when macOS asks.
Download for Mac v0.1.0

iPhone Your device

iOS 16 or newer

  1. Not on the App Store yet. Apple only allows installing it from a Mac with Xcode for now.
  2. Ask the party host to install it on your iPhone with a cable (takes about 2 minutes).
App Store version coming

Good to know

Bluetooth is slower than Wi-Fi, so here’s what to expect.

Up to 8 devices
One host plus up to 7 speakers. Keep everyone within about 10 metres of the host.
The first song takes a moment
The host sends each song before it starts (often 30–60 seconds). The next songs are sent while music plays, and songs already sent stay saved.
Your own music files
MP3, M4A, AAC and WAV files work. Spotify, Apple Music and YouTube lock their audio, so they can’t be shared.
Screen can be off
Music keeps playing with the screen locked. Keep SyncSpeaker open in the background.