I do this kind of stream-of-consciousness recording by just sending messages to myself on Telegram, sort of like a mobile fleeting note. Some people like doing it through voice, but typing is fine with me.

After that I just refine the saved messages and transfer them into my system.

> Emacs will always be faster vs. an Electron app.

No, but it should certainly take up less memory. Emacs lisp is slow, I think the basic operations would be faster if it were an Electron app.