PopGrotto is a place to show off your cool stuff and socialize about it in an environment comfortable to artists and home-made enthusiasts alike. It is an app featuring very unique and constantly updated memorabilia to view and talk about with your friends. It features smart categories that will build as PopGrotto continues to grow, allowing users to add and enjoy interesting items in categories that are not normally on display with a typical collector site. The app was created by a group of well-known vintage collectors that have long collected items never before being seen or known to the public and they have never had a venue to show them off. Developed for everyone to add their own special and unique items to share and talk about, PopGrotto features rock and roll, sports, coins, stamps, crafts, Americana, paintings, and many more categories for viewing. And the list keeps growing.