I use analog obsession compressor plugins as reference gold standard = 4 stars.
This one does not sound clean to be match for AO. It distort sound where it should not. Its not that big distortion, lot of plugins sounds much worse. Overall, if you find musical use for it because you like the sound and UI - you might sometimes use it on certain sounds which are distorted already and not very long. On clean long sounds its pretty noticeable.
Download is annoying, while it is free, you need to create account and online authorize plugin on first run.
This sounds really great, hard to fault. But getting the plugin is a real hassle and the site is very cryptic. The only way i could get it was by having an account and also by gettiing a demo of another product but they dont really tell you this at all. I think they are missing out on customers because i have read of people on forums giving up on even getting this because they cant figure it out.