Mobile "Check-in" Style App Tied to Drupal Backend

What i would like to do is this - create a mobile app (iphone, ipad, android) - that tracks a concert journey for our fans - for our users to check in and post content from shows to organic groups on a drupal site ( with social sharing) Developer must be aware of itunes and google requirements of acceptance and ensure compliance. KEY POINTS Easy login (w username/pass or FB connect) that Ties to the user account on website (drupal) -VERY IMPORTANT on login - prompts for hometown info if missing on profile 3 gets current location (geotarget is installed already) Then there are 4 levels to a journey (for now) Check -in 1- Start journey - (I'm Going - concept) - check in only for now - needs to correspond with the "event" organic group on drupal - does ticket purchase verification - if no ticket - prompts to buy in advance Check -in 2 - At the gig -(I'm Here) - shows that they are at show with a message event (heartbeat stream for organic group) Check - in 3 - Show is done (I'm Done) maybe special product bonus etc Check In 4 - (I'm Home) - prompts for review of show - and prompts for next show within 50 miles There will be a pop up message after every check in for award or special offer Next step would be photos and video uploads to the OG groups as phase 2 Please answer with the phrase "On the Road" in your message so I know you've read each point specifically