If all you need is daily notes, Obsidian does that out of the box. You don't have to tweak anything, install any plugins or learn any new syntax if all you need is a simple GUI over text files. It's not open-source however.
Don't get fooled and intimidated by the "productivity porn" community that likes to show off their sophisticated setup and unrealistic workflows. My rule: if they refer to Obsidian as their "second brain", they are part of the cult and should be ignored.
All that said, I strongly encourage you to try pen and paper, the ultimate, no setup, open source app. And it has exquisite haptic feedback on top of that.
Don't get fooled and intimidated by the "productivity porn" community that likes to show off their sophisticated setup and unrealistic workflows. My rule: if they refer to Obsidian as their "second brain", they are part of the cult and should be ignored.
All that said, I strongly encourage you to try pen and paper, the ultimate, no setup, open source app. And it has exquisite haptic feedback on top of that.