Here is another iPhone app that lets you give your videos that retro look. The 8mm Vintage Camera iPhone app comes with 8 lenses and provides you with live view of effects, so you can capture the best videos. 8mm Vintage Camera comes with 13 retro film looks. It even has a jitter button to imitate frame shakes.
You can apply effects while playing videos in your library. Theme are also available, so you can produce retro movies on your phone faster.[where to get it]