[Cthulhu_]

I don't travel on the tube though, or pay for Starbucks, or whatever analogy you're trying to come up with. My current note taking solution - a folder with .md files - is free. What's the compelling argument for this app?

Granted, it's really difficult to compete with free, and the note taking space is probably one of the most saturated software markets there is.

[WaltonGoggins]

You have no outgoings? Then sure, it's hard for me to suggest a comparison to you. I'm not sure it's up to me to suggest an analogy that works for every user on the internet however, pick something that you spend money on regularly.