The App consist in two sections:
The Home Screen:
1) a map in which you see your position. On the map the user sees the markers placed by others. Clicking on a single Marker, user sees its details: title, description, photo, comments, like. He can add a comment to the marker.
2) a button: Report. If user click report the system automatically add a Maker on the map in the user's position. Then the system ask to user if he want to add some details, asking him to insert: title, description, photo (taken by phone-camera or by phone gallery).
The Density Screen:
1) a map of the region in which is the user. On this map are taken in evidence the zones in which there are the most density of markers. In this way the user can see the zones with more markers
Right now I accept suggestion: is better developing it in HTML5? or in object-c? Do you suggestion, we can face this doubt togheter.