What is the default font for Notes?

What is the default font for Notes? (I assume it's the same for iOs and MacOs, if not please correct me).

[I'm talking about the app named "Notes" that comes with both iOs on iPhone and iPad, and the MacOs app]

The reason I want to know this is if I want to "export" the contents of a note, keeping it as much as the original as possible, including spacing and (as I was saying) font / typeface.

Thanks in advance, Cheers

Stefano