用于计算女性的生理周期，可以设置上次MC的时间，之后提醒用户下次MC的时间-Used to calculate women s menstrual cycles, you can set the time the last MC and then to remind the user the next time MC

女生贴身看护，预计女生下一次月经的时间，男生可以用哦-The girls personal care, the estimated time of the next menstruation in girls, boys can use Oh