Sun is an interesting app for a couple of reasons. One, because it’s strikingly beautiful and simplistic. Two, you don’t install it like a normal app. No need to go to the iTunes App Store. Just visit this link from your iPhone’s browser (http://pattern.dk/sun/) and save the link via the “Add To Home Screen” option. Then you’ll see an icon pop up in your home screen where you can look at the current weather quickly and easily.