I was about to say "Obsidian is free as long as you don't use it for work."

But it turns out that that is no longer the case. https://obsidian.md/blog/free-for-work/

Obsidian is now actually free for everyone.

The big benefit is that you get to use the Apple Notes app. I prefer Apple Notes on my phone, to be honest. I haven't used Obsidian's app on iOS in over a year.

I personally put all my work-related dev notes in Obsidian, and all my life-related quick notes in Apple Notes.

Obsidian still does not support iOS widgets. I use the app, but it's honestly still a major annoyance, since I cannot add to-dos with one swipe as I would be able to do with Apple Notes.