Craigslist has come to be known as a modern take on the classifieds section of a newspaper, but Zachariah Reitano and Henri Stern want to go further and provide a real-time exchange service. That’s where Shout comes in.

Shout is a real-time classifieds that lets individuals exchange anything with others on the service. The iOS app lets users offer up something for sale, such as a ticket or a reservation, or make a request, such as a delivery. “Shouts” are linked to a location, a price and a short description and can either be free or cost a specific amount.