Cross Platform Smartphone App

Smartphone app across iPhone, Android & RIM platforms. {Possibly also Web App. It's for a business association to be used as a CRM tool for their members. It would need to include the following: Association's News & Events - feed from their site About the Association - contacts, location, staff etc? Business News Section - aggregated news feeds from multiple relevant sources Training, development and networking - this will be time specific and events based - should be sync-able with phones calendar & Outlook and have location enabled functionality? Business Finder - this will be a classified business directory - location enabled Members area (password login) Renewal of membership subscriptions. Technical information - again industry specific technical info for members only. Would like to introduce a "shop" element as they sell data and services Social media integration, FB, Linkedin, YouTube etc? The app will need to carry messages from specific commercial partners also so banner ad functionality required