Fully free and open source note-taking app with a similar focus: https://zettlr.com
I looked through the features and this appears to be the same dime-a-dozen-me-too app which doesn't have the one feature everyone loves about Roam.
Cheers to the person who built this. I don't want to crap on anyone's work. But this isn't at all like Roam from what I can see.
BTW, if your intention is not to crap on anyone's work, maybe don't call something a dime-a-dozen app?