Rooftop and terrace
Spread the phones around and fill the space with sound, no speaker needed.
SyncPlay · No sign-up
Every phone.
One loud speaker.
Rooftop, picnic or a friends' night in: paste a YouTube or YouTube Music link, tap play, and every phone in the room plays the same song at the same second. Put the phones around you and turn it up.
- YouTube and YouTube Music
- Up to 5 phones
- Late joiners land on the same second
- Nothing to install
Start a SyncPlay room
FreeJoin a friend's SyncPlay
How it works
Music on every phone in a minute
- 1Start a room
Name your party and tap Start. No account, no app.
- 2Friends join
Show the QR code or send the link. They open it in their browser.
- 3Paste a song, tap play
Every phone plays it at the same moment. Anyone can pause, skip or change the song.
Made for
When one phone isn't loud enough.
Friends' night in
Everyone adds songs from their own phone. The whole room follows.
Birthdays and surprises
Start the birthday song on every phone at the exact same second.
Picnics and road trips
Phones in different cars or corners, one song, perfectly together.
For the best sound
Three small tips.
Same Wi-Fi
Phones on the same Wi-Fi stay closest together. Mobile data works too.
Volume up
Turn every phone to full volume and keep the screen on while you listen.
Tap play once
iPhones ask for one tap on the small video before they make sound. After that, it follows the room.
Spread them out
A few steps between phones sounds fuller than stacking them together.
Good to know
SyncPlay questions
What is SyncPlay?
A room where everyone's phone plays the same song at the same moment. Put the phones around the room or the roof and together they sound like one big speaker. Play, pause and seek change on every phone.
Which links work?
YouTube and YouTube Music links: youtube.com/watch, youtu.be, Shorts and music.youtube.com. A few songs can only be played on YouTube itself; for those, pick another link.
How many phones can join?
Up to 5 phones in a room for now. Friends scan the QR code or open the invite link, no app or account needed.
How close is the sync?
Every phone follows the same clock and corrects itself many times a second, usually within a fraction of a second on good Wi-Fi. On a slow network a phone may need a moment to catch up after you skip.
Why does a phone ask me to tap play?
iPhones and some browsers only allow sound after you tap. Tap play on the small video once, and from then on that phone follows the room by itself.
Can DiffWeb see what we play?
No. The song link is end-to-end encrypted in the room, so our servers only see play, pause and the time. YouTube itself does see what each phone plays, just like when you use YouTube.
Is it free?
Yes. SyncPlay rooms are free and need no sign-up. They delete themselves at the time you choose.
Every phone. One song.
Free, no sign-up, no app. Ready in seconds.