I tried Joplin, and most other PKM/note-taking tools out there.

Eventually settled on org-mode. Encryption can be sync-time using restic/cryptomator (cloud sync), filesystem (self-hosted all the way), or save time using plain old GPG. As a bonus, there is a gigantic ecosystem around org-mode, and thanks to the platform (Emacs) it is nearly completely FLOSS and pretty much guaranteed to be around and kickin' when most commercial systems with either die, get acquired or just change too much for my taste.

Probably not for everyone, though.

Joplin has no mobile writer. Only reading.

Obsidian has that. And is more extendable. That is why I switched.

For me, writing a note on multiple devices is the key feature.

Joplin's Android and iOS app can both edit note contents, by tapping the '+' or 'edit' circular button at bottom right of screen.

Last time I checked (2019ish) it wasn’t possible. The times they are a changing, I guess.

Will check it out again.

"Obsidian is not FOSS"

https://forum.obsidian.md/t/publish-the-android-mobile-app-a...

I edit on mobile all the time... works great