Take Your App to Eleven
In the interest of keeping it real, we built a little library for iOS devs that makes it easy to add a small visceral punch to your app. We hope you find it useful. We already have.
You can get it on GitHub right here.
Also, if you have Xcode and just want to play with it, it includes a simple UI for tweaking the settings and changing the animation. Just grab the package and run it in your simulator.