Ondina: Period & Cycle Tracker

Symptom & mood tracker with estimated ovulation and PMS. No account needed.

Ondina is a simple period tracker and menstrual cycle tracker: keep a period log and get to know your cycle. Start without an account.Period calendar and ovulation tracker• Mark your period days on the calendar; your estimated fertile window, ovulation and PMS days appear in their own colors.• Use it as a period predictor: from your logged periods, you get an estimated next period (as a date range), estimated ovulat…