I checked it out -- and I love it.
It's an app that shows you the sun's position all throughout your day AND midnight AND sunrise AND sunset. And it looks so cool!
Their website is entertaining b/c it links to their blog, which had a very funny entry called Marketing’s a Bitch: Lessons from the App Store. It was insightful into the mind of dev's, and hilarious. I posted a long ranty comment, hasn't shown up yet.