In some embodiments, an app provides a geolocation-limited marketplace limited to a pre-defined period of time. The geolocation-limited marketplace is accessible only by the users in a predefined geographical area. Typically, the predefined geographical area is limited to an area small enough for a user to walk from one end to the other in a short period of time. The pre-defined period of time is of some limited length of time that may occur at a pre-defined interval. In some instances, the period of time is one hour.