One of the senior Aperture team members went off to use the underlying OS RAW infrastructure in product called Gentleman Coders Nitro. It's a decent but little known Lightroom alternative with no subscription, albeit without all the recent Lightroom AI-infused features. It does have AI masking though.
I bought their previous software "RAW Power", because it was a one-time perpetual license. Then they rewrote the app (it's worse now BTW), rebranded as Nitro, and stopped updating the previous one to be able to charge again.
The Pixelmator team did the same thing with "Pixelmator Classic".
A fantastic product but the colour science does not look great from a first play, and I don't know if seven days is long enough to figure it out. If I had a job I'd pull the trigger anyway, but too much of a luxury right now. I can't believe I did not know about this application. Shocking marketing! :D