Simple
Lives in the menu bar. Turn it on or off anytime.
Open-source macOS menu bar app
Music that knows when to step aside.
FlowSound fades and pauses Apple Music or Spotify when other apps play audio, then restores it when things become quiet again.
Built for macOS 15+. Apple Music and Spotify. English and Chinese. Local-first, no analytics.
Featured on
Audio focus for your music app
No overlap. No sudden silence.
Without FlowSound
manual
Apple Music / Spotify
Video / other audio
Two soundtracks compete until you pause one by hand.
With FlowSound
automatic
Apple Music / Spotify
Video / other audio
fade out
pause
resume
Music steps aside, then returns from the same paused position.
Avoid overlapping audio. Avoid sudden silence. Stay in flow.
Demo
Watch FlowSound react to other audio.
The menu bar app listens for app audio activity, fades your selected music app out, pauses it, then restores the previous volume.
Trust
Simple, local, auditable.
Private
No recording, no uploads, no analytics, no server.
Open source
Built in Swift with Core Audio and local music app automation.
FAQ
Small answers before you download.
Does FlowSound record audio?
No. FlowSound only computes local audio activity levels.
Does it upload anything?
No. FlowSound has no analytics, no server, and no upload feature.
Does it work with Spotify?
Yes. FlowSound supports Apple Music and Spotify through local AppleScript.
Can it support other music apps?
Apple Music and Spotify are supported today. Other apps can be adapted if they expose reliable local playback and volume control.
Does it support Chinese?
Yes. FlowSound supports English and Simplified Chinese, with automatic language selection and a manual preference.
Why does macOS warn me when opening it?
Current builds are ad-hoc signed tester builds until a Developer ID notarized release is available.