After finding a cool (and totally ungooglable) name, and after 6 months of trial and error with creating a proper macOS UI, I finally took the plunge and launched Lunar on Product Hunt: https://www.producthunt.com/posts/lunar-5
I launched it as a completely free product as I only saw it as a personal project and didn't think that anyone would pay for such a thing.
After all, I thought, I'm probably the only MacBook user that finds pressing monitor buttons hard.
It didn't get much traction, probably because I didn't explain well what problem it solves. But some people liked it.