This is a neat app. Though when looking at the files in finder it looks like while some files are stored as '.md' files the sample md files only contain HTML.

Ah that might be a bug sorry, the sample notes should also have the html extension. The notes themselves are currently stored as html (because of the metadata and the state in notes mainly, you can still export to markdown).

We need to do some work before we can also just store them simply as markdown files.