iexchange mobile application android and IOS

Get This mobile will be used to exchange goods with people around you The mobile will have a registration module where you put your user name password, address country , city , gender , email address and so on or register through your facebook profile It will be used first between play stations gamer who want to exchange the PS CDs or other game console like xbox or any other with other users on the mobile app In which each user will specify the game he own and he want to exchange and specify if he want to exchange it for lifetime or he want to exchange it for limited time one week 2 weeks or a month And he also he will specify what CD he is looking for and want to borrow form the other users User can browse the users around him by specifying the area of search like people around him in a circle or a specified number of Kilometers diameters or people in his city or in country to sea what those users have from CDs and can open a chat box if both want accept the interest request then they exchange their location to meet And from admin point of view we can have categories where where we can define level of categories Like electronics , laptops , game console, and so on Or we can can the categories level dynamics where we can define our own level ALL BIDDERS SHOULD BE COMMITTED TO THE FEATURES AND BID AMOUNT IN THE WEB SITE I DONT WANT TO NEGOCIATE THE PRICE AFTER YOU BID THE PROJECT