An apparatus includes an interactive user interface that varies according to strength of blowing. A sensor detects blowing from a user and outputs a strength value of the detected blowing. A memory stores interactive image data capable of giving an effect of responding to user's blowing strength in real time. A controller loads interactive image data corresponding to the strength value of the blowing from the memory, and configures an interactive image that varies according to the strength value of the blowing, using the loaded interactive image data. A display displays the configured interactive image under control of the controller.