Audio Priority Bar
Menu bar app that ranks your headphones, speakers and microphones and switches to the best one that is connected.GetGPL-3.0
DeciBar
Menu bar noise meter that estimates ambient sound from the microphone, with daily averages, peaks and alerts.
MIT · Free download · Downloads from github.com
- License
- MIT
- Open source
- Source
- GitHub
- gostonx
- Verified
- 2026
About DeciBar
DeciBar lives in the menu bar and shows an estimate of the ambient sound level from the Mac's microphone. It keeps daily averages and peaks, stores readings in the background, and has a dashboard for weekly trends. You can set warning thresholds at 75, 80, 85 or 90 decibels; it sends a notification when the level stays above the threshold, with a cooldown between alerts. It suits people who want to track noise exposure at a desk. The README says the figures are estimates, not calibrated sound pressure measurements.
Requires macOS 15 or later. The release app is not signed with a Developer ID and is not notarized: a Gatekeeper check of it is rejected, so the first launch has to be allowed in System Settings. The README says all processing is local, with no analytics, cloud storage or audio recording, and that microphone access is requested only when needed.
Information
- Source code
- gostonx/DeciBar
- License
- MIT
- Website
- github.com
- Download
- github.com
- Category
- Utilities
- Topics
- Menu bar apps
- Evidence checked
- Tags
OpenMacApps links to each project’s official download. Check its release notes for macOS version and Apple silicon support. The verification date records our license and source review, not a security audit. Read how we verify.
Sources and image credits
- github.com/gostonx/DeciBar
- github.com/gostonx/DeciBar/blob/main/LICENSE
- github.com/gostonx/DeciBar/releases
License and artwork notices
For the Developer
Link to this page from your README with a badge.
[](https://openmacapps.com/apps/decibar/)You Might Also Like
FreeMic
Menu bar app that shows your headphones and input devices and switches the microphone in one click.GetMIT
LockMic
Menu bar tool that mutes all microphones with a global hotkey, push-to-talk shortcuts and an on-screen indicator.GetMIT
AI Monitor
Mac companion for a USB-connected ESP32 desk display that shows AI usage limits read through the CodexBar CLI.GetMIT
AutoMute
A menu bar app that mutes your Mac when headphones disconnect, the Mac sleeps, or the screen locks.GetMIT
Background Music
Control application volumes and pause music when another app plays audio.GetGPL-2.0
Better Resource Monitor
A small menu bar monitor for CPU, memory, storage, GPU and network use, with optional warning colours.GetMIT
Fader
A menu bar volume mixer with per-app volume, one-click output switching and Bluetooth headphone control.GetMIT
FineTune
Set per-app volume, boost quiet apps, route audio to different devices and apply EQ from the menu bar.GetGPL-3.0
FreeAudio
Open-source menu bar app for per-app volume, output switching and software volume on HDMI and DisplayPort monitors.GetMIT
HagimiMonitor
Menu bar monitor for CPU, GPU, memory, storage, network, battery, Bluetooth and displays, with history reports.GetAGPL-3.0
iGlance
Menu bar system monitor for CPU load and temperature, memory, network, fan speed and battery alerts.GetUnmaintained