Fadeo watches the app in front of you, the desktop you're on, and whether you're in a meeting or heads-down — then plays, fades or switches audio to match. Rules you define, down to the second.
Any workspace marked as an override that matches pre-empts everything else. "Meetings" pausing audio unconditionally is the canonical example.
Every enabled, non-override workspace whose rules currently hold becomes a candidate. Usually there's one. Sometimes several apps overlap.
When more than one candidate matches, an ordered chain narrows it to one: stickiness, specificity, priority, recency, stable order. You control the order.
Nothing matched. Keep the current audio, resume whatever played before, or fade to silence. Your call, set once.

Define what a workspace is: which apps pull you into it, which Space, whether it needs a meeting or a Focus mode, even a time window. Apps can be "weak": they keep a workspace playing but never yank you into it.

The tiebreak chain, the fallback behavior, and global fade timing, all editable, all with real numeric fields, not just sliders you have to eyeball.

Ambient noise is synthesized on-device in real time. No shipped audio files, no looping seams. Or conduct Spotify and Apple Music directly, including specific playlists.
Pay what you want
$2 minimum · lifetime · one time
Fadeo is fully functional without a license, forever. The license just removes a small, occasional reminder. Pay $2 if that's what you can spare, or more if you use it daily and it feels worth it. Source is GPLv3 — read it, fork it, build it yourself for free.
Get a licenseYour license key arrives by email within a few minutes of purchase. If it doesn't show up, check your spam folder first.
The first 100 people who ask get a lifetime license free, no card required. When they're gone or the window closes, this card disappears and it's back to paying what you want.
90 of 100 left
Must be activated within 7 days, or the code expires.
An occasional note when there is a real release worth your time. No more than a handful a year, and one reply unsubscribes you.