Question 1

Does the volume slider actually work?

Accepted Answer

Yes. The built-in Multi-Output Device greys out your volume keys and locks playback at full. Tandem gives you back one real master volume you can move from the keyboard or the menu bar.

Question 2

What about AirPods volume?

Accepted Answer

Some Bluetooth devices, including AirPods, set their own level on the device rather than letting the Mac control it. Tandem flags those devices and shows you how to adjust them so you're not caught out.

Question 3

Do two headphones stay in sync?

Accepted Answer

Two of the same model stay tightly together. Two very different Bluetooth models may sit slightly apart because each has its own built-in delay. Wired or same-model pairs are the tightest.

Question 4

How does adding a friend's headphones work?

Accepted Answer

Add them as a guest device for the trip, share the audio, then remove them when you're done. Nothing about their device is stored.

Question 5

How many headphones at once?

Accepted Answer

Most people pair two. Tandem supports more when you need them, though two same-model pairs give the cleanest sync.

Question 6

Which Macs and macOS versions?

Accepted Answer

Tandem runs on modern Macs (Apple silicon and recent Intel) on a current macOS. The App Store listing shows the exact minimum at download time.

Question 7

Is my audio private?

Accepted Answer

Completely. No audio ever leaves your Mac. Nothing is captured, recorded, or sold. This site uses cookieless Fathom analytics that collect no personal data; deeper PostHog analytics are off until you opt in.

Question 8

How do refunds work?

Accepted Answer

Refunds go through Apple on the App Store, the same as any Mac app purchase.

Frequently asked questions

Ready to share the sound?