The Best Pro Writing App for Mac (and iOS) - The Sweet Setup Ulysses is the best writing app for Mac, iPad, and iPhone.

Its Zen mode keeps your writing front and center, while its built-in Markdown formatting means your work will look great no matter where on the Web you publish it. Focused is an simplified word processor that eliminates distractions while you write. It includes tools to keep notes, collect research, outline, and organize your writing. Scrivener ($45) is a Windows and Mac app that gives you a single place to dump all your ideas and writing.