I have both on iOS and I have to say I much prefer Obsidian.
Although Joplin is FOSS, Obisian uses plain text files rather than a database which is a massive plus to me, personally.
Also, Obsidian UI is light-years ahead of Joplin's. It's interesting that (IIUC) Obsidian is also not native but it feels completely native when compared to Joplin.
Also most Obsidian plugins work fine on desktop and mobile and the ecosystem is visibly growing. I don't think Joplin's plugins are really getting a huge traction.
All in all, Obsidian replaced most other apps I used (Bear, Noteplan, Evernote). The only thing I can imagine replacing Obsidian is LogSeq if they get their mobile app right.
Unfortunately Obsidian cannot replace apps like Agenda or noteplan for me, because it doesn't sync with external calendars. I still use it for most stuff though.
Although Joplin is FOSS, Obisian uses plain text files rather than a database which is a massive plus to me, personally.
Also, Obsidian UI is light-years ahead of Joplin's. It's interesting that (IIUC) Obsidian is also not native but it feels completely native when compared to Joplin.
Also most Obsidian plugins work fine on desktop and mobile and the ecosystem is visibly growing. I don't think Joplin's plugins are really getting a huge traction.
All in all, Obsidian replaced most other apps I used (Bear, Noteplan, Evernote). The only thing I can imagine replacing Obsidian is LogSeq if they get their mobile app right.