It’s a writing app for the iPad, iPhone, and Mac. It has a Windows version too.
I think it might be the ideal app for me for nearly all my writing. That includes my professional journalism, personal blogging, creative writing, online comments, and random digital scribbles. It might replace a text editor, word processor, scratchpad app, Scrivener, and much of what I use Evernote for.
Or it might be a dog. I’ve only looked at the iPad version, and that for only a few minutes.