Once -A special period tracker

An app for girls surfing the crimson wave, once a month

For the all women who need menstruation recording calendarFor the all women who need caring dairy for irregular menstrual pain and menstrual cycleFor the all women who want to know the fertility, ovulation, contraception and probability of pregnancy through calendarFor the all women who annoys marking menstruation and contraceptive pill on the calendar every time.For the all women who secretly record the symptoms of…