Display apparatus, user terminal, control method, and computer-readable medium

A display apparatus includes a display; a communicator configured to communicate with a plurality of external apparatuses, which respectively provide a plurality of contents; and a processor. The processor is configured to: based on receiving information relating to contents among the plurality of contents from external apparatuses, respectively, through the communicator, identify the external apparatuses that transmitted the information, among the plurality of external apparatuses, control the display to display a UI including the contents respectively received from the identified external apparatuses, and control the display to display, on the UI, reproduction states of the contents to be visually distinguishable according to states of inputs of users of the received contents, the inputs being received through the identified external apparatuses, respectively.