I am an iOS application developer. I have developed more than 24 apps in which 24 apps are on app store. So i have enough experience. My apps are based on web service just like JSON parsing, SOAP etc and audio /video processing based in which AVFoundation framework are used.Some of my apps are based on audio processing ,audio graph according to its voice pattern etc.Some of my apps are based on mathematics just like rotation , transformation of polygons etc.Some of my apps are based on animation. Some of my apps are based on silent push notification,remote notification etc.