GAKKEY LAB

Small macOS tools lab

Small tools for the little things
I wish I had.

I make macOS apps for my own creative workflow.
If they look useful to you, you are welcome to give them a try.

Bridge Meter & Bridge Plugin

A compact meter
made to stay in view.

Bridge Meter works with the Bridge Plugin and Mac audio input, and can also capture audio directly from your Mac with no complex setup. Just select “System Audio Out” as the input and start metering.

Bridge Meter, Relative Time Counter, and Side Note arranged in a Pro Tools workspace
Stereo VU meter display
VU Meter VU by default. Double-click to switch views.
Momentary and short-term loudness display
Loudness Displays LUFS and peak values.
Lissajous and spectrum analyzer display
Analyzer View the Lissajous scope and spectrum together.
Bridge Meter panels detached over a Pro Tools session

Flexible panels

Detach the panels you want
to keep in view.

The Loudness and Analyzer panels can be detached temporarily.
Reference Level can also be adjusted to suit your workflow.

Bridge Plugin System Audio Input System Audio Output AAX / VST3 / AU
Bridge Plugin window

Bridge Plugin is also included.

Add the AAX / VST3 / AU Bridge Plugin to your DAW to send display data directly to Bridge Meter. It offers lower latency than System Audio Out and excludes audio from other apps. The plugin only sends metering data and does not alter the audio itself.

System Requirements macOS Sonoma 14.2 or later / Universal Binary (Apple silicon and Intel)

View latest version

Relative Time Counter

Set the counter to
zero anywhere.

Use MTC / MMC to set any position to REL=0. Jump straight to the “1:30” your client mentioned.

  • Switch between REL and ABS displays
  • MTC / MMC support for use with a variety of DAWs
  • Locate by relative time or timecode
  • Additional Pro Tools integration via PTSL SDK
  • Auto Talkback

System Requirements macOS 12 Monterey or later / Universal Binary (Apple silicon and Intel)

View latest version
Relative Time Counter and its settings panel displayed over Pro Tools
Side Note displaying notes, lyrics, and an image over Pro Tools

Side Note

Keep notes and PDFs
always on top.

A floating note app with three independent notes for text, PDFs, and images. Keep Side Note above other windows, and AutoHide quietly hides it when it gets in the way.

  • Text, PDFs, and images
  • Three independent notes
  • Opacity control and AutoHide
  • Save window positions and content together

System Requirements macOS 12 Monterey or later / Universal Binary (Apple silicon and Intel)

View latest version
Apps

Download

All apps are free to use.

Testing has focused primarily on Apple silicon Macs running macOS 26 Tahoe.

Bridge Meter

Bridge Meter

Ver. 2026.9.12macOS Sonoma 14.2 or later / Universal Binary (Apple silicon and Intel)
Added an indicator light for Bridge Plugin connection and receive status.
Switch meter views and inputs with the mouse wheel, and reset Peak Hold just by hovering over the hold lamp. These controls work without clicking Bridge Meter or pulling focus from your DAW, so you can keep working while checking the meter or changing views and inputs.
Compatibility with macOS 27 Golden Gate is currently being tested.
Relative Time Counter

Relative Time Counter

Ver. 2026.8.21macOS 12 Monterey or later / Universal Binary (Apple silicon and Intel)
Added integration with Side Note.
Added automatic update checks and an online manual.
Improved the reliability of REL=0 setting when using PTSL.
Known issues have been confirmed on macOS 27 Golden Gate. An update is in progress.
Side Note

Side Note

Ver. 2026.9.12macOS 12 Monterey or later / Universal Binary (Apple silicon and Intel)
The control panel can now be displayed in the menu bar.
Known issues have been confirmed on macOS 27 Golden Gate. An update is in progress.
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