FocusMic

🎙️ Lock your macOS input microphone and output device from the menu bar.

FocusMic is a small open-source macOS utility that keeps the system default audio input and output on the devices you choose. If macOS, a Bluetooth headset, a USB interface, or another app changes either default device, FocusMic can switch it back automatically.

Install

Download the latest build from GitHub Releases, or install with Homebrew:

brew install --cask lageev/tap/focusmic

Runtime requirement: macOS 15.0 or later.

Use

1. Open FocusMic.
2. Click the menu bar icon.
3. Choose the input and/or output device you want to keep.
4. Turn on the corresponding Guard input device or Guard output device switch.

When a chosen device is online, FocusMic keeps it as the corresponding system default input or output. If it disconnects, FocusMic waits and restores it when it comes back.

Features

• Menu bar device picker and guard switch.
• Independent input and output guards with automatic restore when either default device changes.
• Optional input volume lock for the selected device.
• Optional live input level meter, calculated locally.
• Device details: transport type, sample rate, bit depth, channels, volume, and in-use state.
• Hot-plug support for USB, Bluetooth, built-in, and other Core Audio input/output devices.
• Recent activity log.
• Launch at login.
• Direct-download updates via Sparkle. App Store builds are updated by the App Store.

Privacy

FocusMic runs locally on your Mac.

• It does not record, upload, or analyze audio.
• The level meter only reads local loudness in real time and stores nothing.
• There is no account, analytics, ads, tracking, or crash reporting.
• GitHub/Homebrew builds only use the network for Sparkle update checks.
• Preferences are stored locally in UserDefaults.

Read the full Privacy Policy.

Develop

Requirements:

• macOS 15.0 or later
• Xcode 16 or later with the macOS 15 SDK

Run from source:

1. Clone this repository.
2. Open FocusMic.xcodeproj in Xcode.
3. Select the FocusMic scheme.
4. Run from Xcode.

Main technologies: SwiftUI, Core Audio, Observation, ServiceManagement, and Sparkle.

Project Structure

.
├── FocusMic.xcodeproj/     # Xcode project
├── FocusMic/
│   ├── App/                # App entry, lifecycle, updater, brand links
│   ├── Audio/              # Core Audio device model and guard logic
│   ├── Settings/           # Preferences and launch-at-login support
│   ├── UI/                 # SwiftUI menu bar, main window, rows, logs
│   ├── Assets.xcassets/    # App icons and colors
│   └── IconSources/        # Source icon assets
├── docs/assets/            # README images
├── SupportFiles/           # Info.plist and entitlements
├── landing/                # Website, legal pages, appcast
├── README.md
└── README.zh-CN.md

Community

Scan with WeChat to join the FocusMic user group. QR code valid before 2026-07-12.

Links

• Website
• Terms
• Privacy
• Issues

Acknowledgments

Thanks to the linux.do community for the support and feedback.

License

MIT