Some of these apps are really good. And they’re free!
Tools for filming on iPhone
It’s pretty amazing the kind of video quality you can get from a simple iPhone. With the iPhone 4 you can film in 720P and with the iPhone 4S you get up to 1080P! But to get the optimal quality, you are going to need some tools to help you. The first example I found was when the iPhone 4 was released some guys made this film, all made with the iPhone, including the editing. Soon after the release of the iPhone 4S, this example showed up on Vimeo. This is also a good example of the kind of quality you can achieve with just good lighting and some creativity.
But to be able to get good quality out of your phone, you need some tools to help you.
The filming capability of the iPhone is getting better and better. The quality is getting good enough to do some serious projects with it cheaply. But the right tool for the job is not the built-in software for filming. It’s using an app called FiLMIC Pro that is available in the App Store. You will even be able to make high-quality films like this one.