Watch and listen together — each on your own headphones. Your Mac only plays to one pair at a time; Tandem shares the same sound across two, three, or more, all in step.
macOS · $9.99 once · no subscription
- No audio leaves your Mac
- No account, no email
- One-time price
macOS plays to one output at a time — the second pair gets nothing.
Your Mac won't share
Plug in a second pair of headphones and macOS just picks one — the other person hears nothing. There's no built-in way to play to both at once. Tandem is the one that does.
Why Tandem
Everything you need to share the sound
Built for the people you watch with — each on their own headphones.
Pick your headphones
Choose two, three, or more outputs and Tandem plays to all of them in step.
One master volume
A single slider moves both pairs together — no more stuck-at-max.
Trim each pair to taste.
Balance each pair
Nudge per-device trim so both listeners sit at a comfortable level.
Save a group
Keep your favorite pairing as a preset and bring it back in a tap.
Add a friend safely
Drop in a guest's headphones for the flight, then remove them after.
How it works
Three taps to shared sound
Try it right here.
Pick devices
Tap to add two pairs of headphones to the group.
Set the master
Drag one slider — both pairs follow together.
Add a guest
Bring in a third pair for a friend, safely.
Use cases
Made for the people you watch with
Wherever loved ones want to share the same sound, headphones on.
Yours, and only yours
- No audio ever leaves your Mac.
- Nothing captured, nothing sold.
- Analytics are off until you opt in.
Mac App Store
Private by design
Your audio is routed entirely on your Mac. We can't see it, and neither can anyone else.
One price, no subscription
One-time purchase on the Mac App Store.
- Every feature, forever
- Free updates
- No account, no email
macOS · $9.99 once · no subscription
Refunds go through Apple, like any Mac app.
Good questions
Ready to share the sound?
One Mac, everyone's headphones, one movie together. $9.99, one time.
macOS · $9.99 once · no subscription