About Ulysses

Ulysses lets you focus when you need to concentrate. It keeps all your texts neatly stuffed in its intuitive library. With a few clicks, Ulysses can create beautiful documents from your manuscripts: PDFs, web pages, even iBooks-ready ePubs. With its simple, clutter-free interface, it will turn work hours into fun time. And mere thoughts into powerful stories. If you love to write, and write a lot, Ulysses is made for you.

Note:
If does not start, enter in the terminal:

xattr -cr /Applications/UlyssesMac.app && codesign --force --deep --sign - /Applications/UlyssesMac.app