That's the thing though, I'm only interested in offline first free software. I see no point in paying someone for my notes and I'm not collaborating with anyone

That's the thing though, I'm only interested in offline first free software. I see no point in paying someone for my notes and I'm not collaborating with anyone on them. With zim everything it just text and folders, easily done manually if I wanted it on mobile, but for that I just use markor.