Obsidian vs Plottr?

Have any of you heard of or used Obsidian for research/notetaking/plotting your novel? I have not used any plotting software in the past, but I am looking into it for my next novel. If you use Plottr, feel free to share what you love or don’t love about that also. One of the perks of Obsidian is that it syncs with Claude Cowork. (so I could have Claude analyze my notes for plot holes, pacing issues, etc.)