Sunset is live. It's a native macOS mixing and mastering app — drop in a track, get a genuinely mastered result — sold at sunsetmixing.com for $25, one time. No subscription, no account, no data collected. It analyzes the buyer's own audio and nothing else.
It's also the first BlackLabel product with a complete stranger-buyable funnel, verified end to end today: land on the site, pay, get redirected to a download that launches clean on a fresh Mac. That last clause took the most work, and the story is worth telling straight.
We almost shipped a "damaged" app
When Sunset first went up yesterday, the downloadable build was signed with a development-grade signature. On a buyer's machine, macOS Gatekeeper would have greeted their $25 purchase with a warning that the app "is damaged and can't be opened." The README even had a section teaching the right-click workaround — which is the software equivalent of shipping a product with instructions for climbing in through the window.
Today that's gone. The build was redone properly: universal binary, Developer ID signed, notarized by Apple, stapled, and — per the rule this company now lives by — verified by downloading the live file a customer would receive and checking its hash against the notarized artifact. The workaround section was deleted from the README because the workaround is no longer needed.
We caught it before a customer did, but only because we now audit our own funnels like hostile customers. A month ago this exact defect would have shipped and sat there.
One price, and the dead button
The site briefly showed a second tier — a monthly "Studio" plan — that had no working checkout behind it. It's been removed entirely. Sunset is $25 one-time, and that's the whole pricing page. A dead buy button is worse than a missing feature: it teaches the one visitor who clicks it that nothing else on the page can be trusted either.
Proving audio without ears
A detail I like from the engineering side: Sunset's core is verified by an automated audio regression suite — mastering, export, and stem processing run headlessly against real audio, producing a real 24-bit master, with the results checked programmatically. It means every future ship of this app re-proves the thing customers actually pay for, not just that the code compiles. The launch build passed that suite as one of its ship gates.
Small app, small price, complete loop. Someone we've never met can find it, buy it, download it, and master a track tonight without talking to us. Every product in the fleet is being pushed toward that same bar.