Keeps your default audio device as your default audio device. macOS switches to AirPods the moment you put them on, which also drops Bluetooth audio quality to the low-bitrate call codec. MicGuard stops that.
Also handles volume - conference apps like Zoom and Meet mess with your mic volume via auto gain control. MicGuard keeps it where you set it.
Vibe-coded macOS menu bar app. Swift, no external dependencies, no network access.
- Lock preferred input/output device
- Lock mic volume or auto-reset after meetings
- Auto-switch output when preferred device connects
- ON AIR indicator when mic is active
Download the signed and notarized build from Releases, unzip, drag to Applications.
Or build it yourself:
swift build
# or open MicGuard.xcodeproj in XcodeNothing leaves your machine. No analytics, no mic access — MicGuard uses CoreAudio device metadata only, so macOS never prompts for microphone permission.
Personal use only. You can use it and modify it for yourself but you can't redistribute it. See LICENSE.