Abstract: A menstrual cycle monitoring apparatus 100 that determines a menstrual cycle of a user is composed of: a clock unit 103 that measures a usage quantity (i.e., a cleansing time period taken from when a bidet switch 111 is pressed to when a stop switch 113 is pressed) of the bidet apparatus 116 that cleanses the vaginal area; a memory unit 104 that accumulates a history of the measured usage quantity for each date; and a menstrual cycle determining unit 105 that determines the menstrual cycle of the user on the basis of the history of the usage quantity accumulated in the memory unit 104.

Abstract: An ovulation cycle monitor system 100 provided for a toilet fixture is composed of: a urine temperature measuring unit 102 that measures a temperature of urine excreted from a female user; a hormone measuring unit 103 that measures a concentration of a hormone that is contained in the excreted urine and fluctuates in its secretion amount with an ovulation cycle; a memory unit 117 that accumulates data of the measured urine temperature and data of the measured hormone concentration in association with a measurement day; an ovulation cycle calculating unit 104 that calculates an onset date and a length for each phase of the ovulation cycle by reference to the data of the measured urine temperature and the data of the measured hormone concentration accumulated in the memory unit; and an ovulation cycle predicting unit 115 that predicts future ovulation cycles of the female user on the basis of the onset date and the length calculated for each phase and directs a displaying unit 118 to display the predicted ovula