Build an App

Looking for someone to build an App ... This app must work on both iPhone , and Android , and the app will be posting on facebook for the user . Requirements: App must be APPLE app store friendly (iPhone,iPad,iOS) App must be Android friendly User login via Facebook (user database recorded) User friendly app thats able to post to multiple Facebook Groups they are a member of (not pages) User must also have record of previous posts and be able to "post to all” or “bump” User must be able to navigate back and forwards and also home at all times. App must also post user’s post to a dedicated website “[login to view URL]” App must also post to Facebook like page "Cars and stuff for sale" User post set out : PAGE 1 : login via face book PAGE 2 : option 1 : Post for sale option 2 : bump posts POST FOR SALE PAGE 1 : header price location details POST FOR SALE PAGE 2 : attach pictures POST FOR SALE PAGE 3 : Users Facebook groups the user is a member of and select which groups the user wants the post to be posted on. POST FOR SALE PAGE 4: POST button PREVIEW OF POST ____________________________________ BUMP POSTS PAGE 1: list of users posts which user selects one BUMP POSTS PAGE 2: user types desired comment e.g.”bump” post button under comment warning under post button “most groups have bump rules”