I don't know which license matches this so I'm going to write it out. You can do what you want with the code, but do not distribute compiled copies of the app, especially on mass download sites.
I mean, it's not quite BSD, but it's hardly 'all rights reserved'.
That's the default header created by Xcode when making a new file, I didn't add that on purpose. I suppose I should go through and get rid of those lines.