What's the best ultra-simple app for note-taking on your phone?

I just want to click the app and start making a note, then organize it.

Minimal! minimal.app 

> free 
> notes decay if not interacted with (can be turned off) 
> pretty, has themes
> amazing markdown support 
> cool features like one click publish to a site, auto add tasks to calendar, and export to email client - all out of the way and optional 
> my go to for “need to jot down now”

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