Daysy
Your personal fertility tracker

Daysy tells you when you are in your fertile window and when not. Daysy is not a contraception.

As easy as 1, 2, 3..
Only 30-60 seconds per day!
1
Every morning when you wake up, you measure your temperature under your tongue.
2
Enter if you have your menstruation.
3
Daysy evaluates your data for the next 24 hours and shows you if you are fertile or not.
What our customers say:
It helps me keep track of my period and when I may be ovulating.
Lauren - accounting administrator
Yes, I would recommend this to any woman that wants to be more informed about her body. It is empowering to know more about your body. Daysy gives women that power to make educated choices using the healthiest option I have seen on the market using the latest in technology.
Joanna Nicovich, Electrical Engineer.
I wanted to share my experience now that I've used Daysy for a full month.

The post on Daysyusa's Instagram page saying "You don't ovulate on the same day every cycle" was spot on and I felt the need to share how much that resonated with my experience.

I have a very regular cycle. I track...
Anonymous until Announcement
You can count on Daysy!
  • Red = fertile
    On red days, you can plan for a baby.
  • Red flashing = day of ovulation
  • Green = out of your fertile window
    You are not fertile on green days.
  • Yellow = learning phase/cycle variations
    On yellow days, Daysy becomes better acquainted with you. If pregnancy is out of the question for you right now, consider these days as red and use a barrier method of your choice or postpone PIV (penis-in-vagina) sex.
Medical basics related to the female cycle
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