need help with map based app

hey guys I have a great app idea that will make some serious cash, or atleast I think so.. and from what I know, should be relatively strait forward to make. Basically I want to provide a regularly(by the hour) updated map, with placemarkers appearing and disappearing when I decide, with a photo I designate to be attached to that place marker I put on your map which as an end user you would have to click that marker to see the photo. I would also need a feature for users to submit me pictures with a gps signature associated to that photo which I could verify and then make available as a place marker on the map for other users to see. I want this to be a monthy subscription and reward end users with 3 months free subscription if their picture is used.

I need as much help and info as I can get and would definitly consider buying this if someone helped/made this app.

thank you for your time

— modified on Mar 20, 2013, 12:46:07 PM