Nathaniel Labs
Audio Studio

Set each app at its own level.

Give your player, instrument app and other Mac audio separate volume, EQ and output controls. Save a scene for the next session.

A practical setup

Balance a reference track against your instrument, then adjust each Mac app’s volume, EQ and output on its own.

A reference track that stays below your instrument

  1. 01

    Open your reference player and instrument app, then find each app in Shruti.

  2. 02

    Set their volumes and use per-app EQ to shape the listening balance.

  3. 03

    Choose an output for each app and save the setup as a scene.

Before you begin

App access and output behavior depend on your Mac and the apps you use. Confirm each selected output before you begin.

Recorded on our studio Mac

Turn down the browser. Keep your balance.

Give Chrome its own level while keeping the system output and the other app controls where you left them.

15-second silent controls demonstration · Shruti 1.4.28 studio candidate. Recorded on 1 October 2026, cropped and shortened from the real app window. This is a visual demonstration, not an audio comparison. See the download panel for the current public release.

Read the walkthrough
  1. Find Chrome in Shruti’s app list. Its level starts at 100%.
  2. Lower only Chrome’s slider to 35%. The system output remains at 100%.
  3. Restore Chrome to 100%. The other app levels and output selection stay unchanged.

What it does

Give every Mac app its own volume, EQ and output device, with modes for real life on headphones, TV and stage.

Per-app control.

Chrome at 40 percent, Logic at full, notifications at zero. Set it once, it remembers.

Modes for real life.

Set a software-level volume ceiling, lower music when a call starts, and save a stage mode for the setup you want to keep.

Lives in your menu bar.

Native and close at hand when you need it. App controls stay on your Mac; release and licensing services are documented separately.

Founder note

I teach and record all day on one Mac. The moment a browser tab screamed over a student's recital recording, I started building Shruti. It has been in the menu bar of my own machine every day since.

What's new

  • Updates no longer wait forever because a saved volume, mute or effect control is attached to a silent app.
  • A browser keeping its audio stream open does not block an update when Shruti’s healthy audio tap confirms it is silent. This uses the signal before Shruti’s mute and volume controls, so muted playback remains protected.
  • Active recording, real playback, missing activity information and stale audio measurements still hold the update. After 10 seconds of confirmed quiet, an update you already chose can continue.

Downloads

macOS 14.2+ · Apple silicon and Intel

One universal installer. The current public build is separate from the newer candidate being tested in the studio. Later macOS releases still need testing.

Known issues

  • See the release notes for the current build. Compatibility with every device and workflow has not been verified.

Follow Shruti

Release notes and early build calls for this product.

FAQ

Does it work with any output device?

Shruti works with Mac output devices supported by its controls. Behavior can vary by device and audio route, so check your own setup before relying on it live.

Will it slow my audio down?

Latency can vary with your Mac, output device and audio route. Check your own setup before relying on it for live monitoring.

Does the software volume ceiling guarantee safe listening?

No. It is a software-level control, not a hearing-protection guarantee. Loudness depends on your Mac, app and output hardware; test the exact route on your own equipment before relying on it.

Is it a subscription?

Buy once. Lifetime use and all future updates to the apps you purchase, including future major versions. No subscription. The intended personal licence covers up to three Macs you use.

Can I join the beta circle?

Selected testers will receive a 30-day trial once trial-enabled builds are ready. The current download is not yet governed by that beta programme. A later paid purchase includes lifetime use and all future updates.

How many Macs can I use it on?

The intended personal licence covers up to three Macs you use. Device removal and recovery are being prepared; paid access is not available yet.

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