Making a short movie right in your hands is way much easier now. Honda has come up with this amazingly simple short movie app for iPhones4/4S/5 which can be downloaded from iTunes App Store for free.
This is how you use it.
1) Choose from 3 patterns (1sec x 24 shots/2sec x 12shots/3sec x 8 shots)
2) Shoot as many shots as needed
3) Choose 1 of 9 filters that fits your video
4) Choose a BGM
You can also upload to Facebook and YouTube as it is integrated within the app.
For more detail of the app.
Download app from here.