Create an App from .NET Website with some modifications in Website also.

Hi, I need to build a mobile app for iPhone and iPads. Here is the Brief: You have to write application code for iOS 4,5,6 and 7 also with device support of iPhone 4, 4s, 5, 5s, 5c,iPod Touch,iPad 2-4,iPad Mini. You have to make some changes in some .Net based web-site also with this project. You have to create web-services for the app. Functions for Apps : 1) Geocoding and Map Integration. 2) Core Data or SQLite Database integration. 3) Social Media Integration (Facebook, Twitter, LinkedIn etc..). 4) In App Purchase. 5) Push Notifications. 6) Multimedia Integration (Videos, Images for Marketing Purpose). 7) iAd integration. The full descripstion of the app, development task and the flowchart will be given to the succefull bid winner. Please write your price and approximate dates in PM. Regards.