It's my concern too, Apple only makes it easy to export as PDFs. There is a third party tool that can export to markdown[1]. I wanted to point out as well that

It's my concern too, Apple only makes it easy to export as PDFs. There is a third party tool that can export to markdown[1]. I wanted to point out as well that notes works really well in the browser these days. Good enough to use it on windows, not sure about android though. [1]http://falcon.star-lord.me/exporter/ http://falcon.star-lord.me/exporter/