I have an iPhone 4S and I realized after shooting a time-lapse video that it was recorded upside down and that I'd like to crop the edges so it's in a square format. That got me realizing that, to the best of my knowledge, I don't really have a video editing application installed on my phone.
Although I like effects like the best of them, I really need something that will allow me to perform basic editing of videos (like rotate and crop), in addition to more advanced features like export to a more YouTube-friendly format (say, if I shoot in HD but I don't want to share in HD).
Is there a video editing application that for the iPhone 4S that is clearly superior to the others, yet easier to use for the basic stuff?
Please give detailed information if you can. I'd like to make an educated purchasing decision.