Personally I've not found a suitable mobile note taking app. I tend to use old paper and pencil for that, with a cross between bullet journal and a Japanese met

Personally I've not found a suitable mobile note taking app. I tend to use old paper and pencil for that, with a cross between bullet journal and a Japanese method of organisation (visual index) for them. If I feel I need to keep the notes as they might change, etc, I'll type them up. I'm in the process of teaching myself Emacs because I like the idea of simple txt notes (org-mode) but I'm visual in my learning so treesheets works for me.