Notes on Mac OS X is like Notes on iOS: a basic, skeuomorphic note taking app that lets you type notes, format text, and add images from either operating system, and have them sync up if you’re using iCloud. There’s nothing super tricky about the app on OS X, but the default font size might be a bit too small for you.
If you want to change the size of the text that appears when you just start typing in Notes, here’s what to do.