Play one YouTube video on every screen at once
Phone, laptop, TV, tablet -- all playing the same video at the same time. No extra hardware. Just open a browser and press play.
Everything you need for perfect sync
Simple to set up, accurate enough that you can't tell screens apart. Here's what's included.
Perfectly in Sync
Every screen plays the same frame at the same time. The delay is so small you can't notice it -- even side by side.
Works on Everything
Phone, laptop, tablet, TV, desktop app. If it can play YouTube, it can sync. Mix and match however you want.
Join with a Code
Share a short code like "happy-panda-42". Other devices enter it and they're connected instantly. No apps to install, no pairing.
Fix Speaker Delay
Bluetooth speakers and AirPlay add delay. Adjust the audio offset per device so lips always match the sound.
No Extra Hardware
No Chromecast, no Apple TV, no HDMI cables. Just open a browser and you're synced.
Free to Use
Sync 2 devices for free, forever. No credit card, no trial that expires. Just sign up and go.
How it works
Three steps, under a minute, nothing to install.
Create a Room
Sign in and click "Create Room". You get a short code you can share with anyone.
Add Your Devices
Open the app on your other devices (or send the code to friends). Enter the code and you're in.
Press Play
Paste a YouTube link and hit play. Every screen plays the same video at the same time, automatically.
Download the App
Get the native desktop experience. Or use the web app in any browser.
Windows
x64
Coming SoonLinux
x64 / ARM
Coming SoonWho is this for?
Anyone who wants the same video playing on multiple screens at the same time.
Multi-Room TV Setup
Play the same YouTube video on every TV in your house. Control it all from your phone or laptop.
Watch Parties
Watch with friends who aren't in the same room. Everyone sees the same thing at the same time -- no "3, 2, 1, play" needed.
Classrooms
Play a video and every student's screen follows along. No more "can everyone skip to 3:42?"
Churches & Events
Show the same video in the main hall and every overflow room at once, perfectly together.
Lobby & Retail Screens
Multiple screens in a store, office, or event space all playing the same content in lockstep.
Simple pricing
Start free. Upgrade when you need more.
Free
Everything you need to get started
- Sync 2 devices at once
- 1 room at a time
- Rooms last 24 hours
- Works on all devices
- Same sync quality as Pro
Pro
For bigger setups and power users
- Unlimited devices per room
- Unlimited rooms
- Rooms that never expire
- Priority server connection
- Audio offset controls
- Early access to new features
Frequently asked questions
Everything you need to know about Watch in Sync.
Try it now
Create a room, open it on another device, and press play. Takes about 30 seconds. Free for up to 2 devices.