Luminancer is a photo/video editor app that produces some pretty trippy effects. like light trails, vortexes, and such. It’s available for both iPhone and Android. I was playing with it on my iPod down in the Outer Banks last week.
I did a few experiments with Luminancer, and found that you have to be really stinkin’ close to the camera to get any good effects. Here’s the best video I put together using my LED hoop.