Abstract: A device for managing pregnancy plan includes an ovulation tester configured to test whether an ovulation has taken place and provide a result of a ovulation test, and a mobile terminal configured to provide information related to ovulation to a user, wherein the mobile terminal includes a display, a memory configured to store basic information related to ovulation including at least recent start date of menstruation, and a processor configured to receive the result from the ovulation tester, to determine at least one of a predicted ovulation date and a ovulation date based on at least one of the basic information and the result, to determine a predicted fertility period therefrom, and to display the predicted fertility period on the display.