1 Mac
$7.99
Lifetime license for 1 Mac.
Taperlark / Product 003
Submix
Independent volume, mute, routing, and sound controls for every Mac app.
The download is open to everyone. No account needed. Submix notes
Made for the daily case
Everything in Submix.
7 days to try every feature. Requires macOS 14.2 or later.
- Live audio meters
- Per-app routing
- Volume and mute control
- Volume boost
- Restore audio routing
One-time purchase
Buy Submix.
Choose the number of Macs you use. Your license arrives at the email used at checkout.
7-day full trial One-time purchase, lifetime license License emailed instantly
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2 Macs
$12.99
Lifetime license for 2 Macs.
3 Macs
$17.99
Lifetime license for 3 Macs.
Frequently asked questions
How long is the free trial?
Submix offers a 7 day full feature trial, no account required.
Is Submix a subscription?
No, Submix is a one time purchase with a lifetime license. There is no recurring charge.
How many Macs does one license cover?
A single Submix license covers 1 to 3 Macs, depending on the plan you choose at checkout.
What macOS version does Submix need?
Submix requires macOS 14.2 or later.
What if I lose my license?
Open license recovery and enter the email you used at checkout. We send a private, single-use link to your licenses and active devices.
Submix notes
From the product journal.
Background Music not working on your Mac? What is fixable, and what its own design cannot fix
Background Music failing to launch after a macOS update, sliders that do nothing, or sound gone quiet after uninstalling: which failures have fixes, which are the design, and what to run instead, with every claim attributed to the project's own README and issue tracker.
How to lower the volume of one app on a Mac, from the built in partial answers to a real per app mixer
macOS has no per app volume slider, but the answer does not end there. The app's own controls, Safari's tab mute and the alert slider cover some cases, and a per app mixer covers the rest: one volume row per app, so you can lower or mute any of them alone.
Mac audio crackling after an update: what macOS 26 actually broke, and what fixes it
Crackling, pops and dropouts after a Mac update are a documented chapter of macOS 26's launch. Here is the dated record from Apple's support communities and audio vendors, the workarounds that circulated, which ones make mechanical sense, and what a per app mixer honestly cannot fix.