One of the methods used for planning or avoiding pregnancy is the fertile days calendar.
It needs to be remembered, that this method is not 100% effective. This calendar uses This calendar uses
Only women who menstruate regularly can use this calendar.
Also, factors which may interrupt the regularity of the menstruation cycle need to be taken into account.
Some of them are: inflammatory disorders, stress, change of climate.
The calendar calculates fertile days up to 12 months in advance (green colour).
Intymny Kalendarzyk APP玩不用錢