App for classified site - open to bidding

I want a app for my classified [login to view URL] classified website is where buyers and sellers can talk and chat live on [login to view URL] will help the buyer to see what he is buying first and be sure if the item is good for the [login to view URL],users should be able to use the app to check out ads,see location,live webcam,message and so [login to view URL] also the buyer/seller should be able to get alert when they can do video call or webcam [login to view URL] me know if you can work on [login to view URL] to hear back from you soon.