Pixel Art Camera for iPhone
Your iPhone already comes with everything you need to capture amazing photos. There are also plenty of effects that help you enhance your photos before sharing them with the world. Take Pixel Art Camera for iPhone for instance: it is a handy tool that converts any photo into pixel art.
You get over 25 pixel art styles and various effects to apply to your work. It is also possible to record video in pixel art style using your iPhone. The app is available for free at this time.