Here you have another post that may come useful
Just in the last post there, I shared a newly discovered app that I found super versatile and complete to organize, not only IF but you can adapt it in many ways. It’s free besides the sync feature, but you can use dropbox or drive or another free cloud service anyway so it doesn’t hurt the functionality at all.
It’s called Obsidian.md. It uses markdown language so you can create links to connect everything you write in it. There are also plugins that add even more functions like “Excalidraw” that add the ability to create mindmaps (which I’ve found to be one of the most useful things to have when you’re plotting your IF story).
I stitched os not long ago, and I was using notepad++ and simplemind pretty much for everything, but now I’ll probably do the writing in vscode and the note taking and ploting in Obsidian.