Ah, I remember the little Flip Mino, a pocket HD recorder that took the world by storm and then sank beneath the waves of competition from smartphones that could perform a similar task.
The app, called Givit, is free at the App Store. New users get 5 GB of free online storage for their creations. You begin shooting video(s), then edit by combining multiple clips, adding motion effects, music and transitions. What's cool is that you can highlight a scene as you shoot it and quickly get back to it with a tap.