iPhone App - Project Management App

We need a development team to build a unique iphone application which will be similar to basecamp. The application will be solely for use on iphone, however it must be expandable for us to add features going forward. Visit the reference application / website we mentioned above, then PRIVATE MESSAGE US with what features will be included in the application. In addition to the features you see on the basecamp website (app)... we need a few other features: 1) 2 levels of project management a> company and client b> company and staff 2) Invoicing and payment capabilities a> company will be able to invoice clients who can pay via paypal b> transactions and project balance will be tracked c> both company and client are notified 3) New project quotation form where existing clients and new clients can fill project quote requests, once quote is provided by the company, it can be turned into a project, where the company can select the full project price and select how much deposit is required by the client which will be invoiced to their iphone app. DELIVERY TIME MUST BE WITHIN 20 DAYS (NO BUGS) *** DO NOT SEND us a long list of websites you have produced. ONLY send us your top 5 websites and iphone apps for us to check.