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Daysy
Your personal fertility tracker

Daysy is an intelligent fertility tracker that lets you get to know your very own menstrual cycle. Daysy is to be used to facilitate conception and track your cycle. Daysy is not a replacement for contraception.

As easy as 1, 2, 3 ...
Only about 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 and shows you if you are fertile or not for the next 24 hours.
What our customers say:
Absolutely! Daysy simplifies my life and frees me up to enjoy love and life without guesswork.
Roxanne
I would greatly recommend Daysy for both the healthy lifestyle choice and feeling of empowerment it allows you.
Ele
Investing in my Daysy is one of the best decisions I've ever made. My health and life changing effects aside, the customer service at Daysy is the best I've ever received. Each time I've ever had a question and emailed them they get back to me right away and are so clear with their answers. They ...
Jess
You can count on Daysy!
  • Red = fertile / possibly fertile
    On red days you can plan for a pregnancy.
  • Red flashing = predicted day of ovulation
  • Green = infertile days
    You are not fertile on green days.
  • Yellow = learning phase/cycle fluctuation
    On yellow days, Daysy becomes better acquainted with you.
  • Red, green, yellow = possible pregnancy

We are proud to have won one of the most renowned international design awards - the Red Dot Design Award 2019. The coveted seal of quality for exceptional design is awarded only to products that impress with their outstanding appearance and concept. The Red Dot Award, with over 18.000 submissions, is one of the largest design competitions in the world.

Keep track with the Daysy app
Discover DaysyView!
Statistics & forecasts

Look at your predicted menstrual cycle calendar, temperature curve and menstrual cycle statistics.

Take notes

Track cervical mucus, intercourse, and your own notes about your cycle.

Contact our expert team

Easily reach out to our expert team if you need advice and support.

Medical basics related to the female cycle
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