Development of an App

I want to develop a smartphone/table application that would be downloaded (free) from the iTunes store (or comparable) by participants at business events, conferences or trade shows. It is effectively a 'virtual' conference pack providing, in a simple smartphone application, its users with all information and materials for the conference they are attending. The app would hold an up-to-date interactive personalised calendar with alerts, comprehensive session and presenter descriptions, an event map to help you to find the right room and location, and a history of events previously attended. It facilitates business networking by allowing attendees to connect with fellow participants or guest speakers. It is also environmentally friendly, drastically reducing the printing/paper requirements, compared to a traditional conference pack containing hard copy maps, programs and materials. My business's customers would be specialised event organisers or organisations/companies who are planning a conference or event. The customer pays my company for use of the App's platform, together with access to technical support for the App in the lead up to/during the relevant event. The goal of the app is to streamline the planning of a conference/event, save its organisers time/money and improve flexibility, and enhance the experience of conference participants by providing a one-stop app for conference information and networking.