Starry, Starry Type
Gravilux is a $1.99 iOS app with trippy graphics that don't conform to the laws of our universe. The new version 2.0 of Gravilux adds the ability to animate text once you buy the typography module via in-app purchase. You can type in words and even entire sentences, which the app renders in its trademark stars. Then you touch the screen to animate the text: you can push and pull, collapse them into a black hole, or explode them into a typographic supernova.
There's also a new music visualizer (also an extra fee via in-app purchasing) that pulls from your music library, and you can now email your creations or post them to Facebook and Twitter.
Gravilux was designed by Scott Snibe.