Every app.
Its own volume.

Mute the loud app, keep the music FREE

A slider and mute for every app playing audio, with live meters so you can see who's making noise. That one blaring tab? Silence its browser without touching anything else. Set Zoom to 40% once — it stays there. And when an app's too quiet, push it the other way — past 100%, a real boost, not just down.

macOS stops switching your mic FREE

Rank your microphones once. mixr always picks the best one that's actually connected — AirPods can't hijack input, and if your mic dies mid-call, the fallback is yours, not random. Prefer to pick it yourself? Force any device with one click — mixr backs off until you're done.

Music ducks for calls, then comes back

When any mic goes live, mixr lowers your music — gently on headphones, fully on speakers — and restores it the moment you hang up. It's on by default and it just works; Pro tunes how far it ducks and what's exempt.

No drivers. No virtual devices. Nothing to break.

mixr uses macOS's modern audio APIs — one standard permission, native Liquid Glass UI, ~0% CPU at idle. Quit it anytime and every app instantly returns to normal. Every file it writes and every endpoint it talks to will be published.

It reads your setup and tells you what it sees

On first run, mixr looks at your actual audio hardware and describes it in plain language — the mic it'll use, your headphones, your interface. Then it flags the things macOS quietly gets wrong:

• AirPods drop to call quality the moment they become your mic — so mixr keeps input on something better.
• A closed lid muffles the built-in mic — so mixr moves off it.
• Some interfaces can't be muted in software — mixr tells you up front, and how to handle it.

It won't fake what it can't do

mixr would rather tell you the truth than pretend. It never fakes a mute it can't actually deliver. It mutes the app itself — not a browser tab — and tells you which. Every device decision it makes is shown, not buried. And it works with your hardware instead of fighting it. No telemetry, no surprises — you can see exactly what it's doing.