I'm a journalist. I take notes. Sadly, my handwriting is awful. I can barely read what I write the day after I write it. I type faster than I handwrite, too. So Evernote is my note-taking app of choice. It runs on all four platforms I use (a Windows desktop, a Macbook, my iPhone, and my iPad), synchronizes content among them all, indexes everything, and has neat bonus features like a voice recorder and camera integration. No matter which of my devices I'm using, it gives me access to all my notes and stories, since I also compose most of my work in Evernote. It's a tech journo's dream tool. And if all you want to store is text, the free version is plenty robust enough. I pay for the premium version of the app because I like it, not because I need to.