iPhone App Development For Social Media Managers

I am looking to develop an app which will allow people updating multiple facebook & twitter accounts to easily manage them. The app should be able to: 1. Save login details for multiple facebook & twitter accounts 2. Allow the user to name each account so it's easy recognisable 3. When the user clicks on an account it, automatically logs them in and they have access to the mobile version of that twitter or facebook account 4. A screen which outputs an RSS feed & also the ability to send push notifications (A lite version of the app will also be required which will allow up to 3 accounts & will be ad supported)