app offering info and services to customers worldwide

iPhone App offering services and information worldwide to customers/users. The idea is to start with some defined countries and then expand the project. The iPhone App should have the following characteristics: 1 - be accessible free of charge from customers of selected stores through a password that will be distributed through special coupons; 2 - be updated frequently, to have new information available and keep the customer interested in the offered services and promos The idea would be to develop a world map or if possible use one that already exists (maybe Google). By clicking on different areas / countries you can acquire a range of information such as: - Various and relevant local information - Shops and associations in the area - News, events, things to see, etc. ... (content creation has to be done, but we imagined all the info should be that are accessible through the official organs (government, news..) One could launch the service with the info on to Europe and maybe Asia, then some months later upgrade with more continents like America... We need to know the feasibility of the app and what are the costs of building an app of this type and also the cost of each service upgrades; also need to know the aproximate time of development and deployment of the app; Project is still in development, every programmer suggestion or question before starting with the app creation will be welcome.