"For some bizarre reason, the default font for the iPhone’s “Notes” app is Marker Felt — one that’s only a few design steps removed from the typographical outcast Comic Sans.

However, there is a workaround that will enable you to scribe your notes in the arguably more classy Helvetica. Simply add a special symbol-based international keyboard (Korean, Japanese and Chinese all worked for us) and then when you’re next in “Notes,” change the language (via the globe button), type something, and then change it back to English.

Everything you type after that will be in Helvetica, rather than Marker Felt — thanks and praise be to the font gods!"

Truer words have not been spoken - Marker Felt is atrocious.
This tip is going to make me use notes - click the link to get 9 more useful tips (of course I already knew ha.)

:)