We are also professionals in developing custom iOS Applications.It is the world’s famous operating system that Apple Mobile devices use. This iOS software is made up of four main layers: the Cocoa touch layer, the Media layer, the Core Services layer and Core OS layer. Within each of these layers are many different frameworks that all carry out different jobs to help the user have a pleasant experience. The cocoa touch layer is the highest layer amongst the four. It is responsible for providing the core functionalities for your applications, or apps for short. The next layer is the media layer. This is where the system is provided with audio, video and graphics capability.