Linking notes in an organised fashion along the lines of a zettelkasten is an idea that appeals, as I make notes and save things to read later all the time. I could do this in Drafts but like Bear notes, another option, the notes are saved in iCloud, and I don’t think they are in plaintext or other easy to migrate format. I think it was via Neil Mather that I came across TiddlyWiki. I’m starting to play around with making my own – the beauty of it is it’s all done in HTML, can be saved in Dropbox and is editable from all platforms. My kind of thing.