PERIMON - Cycle calendar 3.6.9E Cycle calendar, contraception and conceiving aid: displays next menstruation, ovulation and infertile days of the female cycle as well as the prediction accuracy. Freeware... An online version with further options is available.

PERIMON - Free cycle calendar 3.6.10.en Cycle calendar, contraception and conceiving aid: displays next menstruation, ovulation and infertile days of the female cycle as well as the prediction accuracy - freeware...