App for Android -- City Sightseeing

I am looking for a guy who can program the following app: City Sightseeing for Hamburg While going through the city, people get information about different sights of Hamburg. Reaching a certain GPS point, either the text is printed or is spoken. (dependend on peoples setting) The user shall have the following opportunities: - Select categories on which he wants to get information (e.g. "Sights" / "Shopping" / "Food" / "Culture" / "History" / ...) - Select whether he just want to get these information as a text when reaching the defined position, or simultaneously also as reading - Select the language in which he gets the information (German / Englisch / Italiano / Espanol) - Pay some money to get a app version without AdMob advertising I was an admin want to have the following possibilities: - Create new / modify / delete sights - Change the price for the ad-free version - Add new languages After the final payment, all the exclusive usage and distributionrights are given to me.