Provided is an information processing system that, by reproducing writing in a notebook together with the situation in which the writing is written in the notebook, makes it possible to easily understand the contents of writing in a notebook. To achieve this, a mobile terminal: receives writing on a page of a notebook displayed on a touch panel; together with receiving writing, executes at least one or more application; respectively adds time stamps to the received writing data and the execution contents of each of the executed applications; as playback data of a written page, transmits a recording request to a data management apparatus; then, when displaying a written page on the touch panel, receives playback data from the data management apparatus; and based on time stamps, synchronously plays back writing data and the execution contents included in the received playback data.