I think fellow members will find this interesting. It's a Sonarworks alternative, if you will, except its free and it's built a bit different. And is it worth it or not, since I haven't tried it myself yet, I leave the video and the decision to all of you.

https://graph.mixphones.net/

 

I wonder of this will work well with the HEARS plugin. I will try it.

 

While we´re at it, i would also recommend checking this place, it seems like it has a few more headphone models
https://autoeq.app/
( https://github.com/jaakkopasanen/AutoEq )