Daysy
Your personal fertility tracker
Now with Bluetooth®

Daysy is an intelligent fertility tracker that lets you get to know your very own menstrual cycle.

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 and shows you if you are fertile or not for the next 24 hours.
What our customers say:
I highly recommend Daysy, it has to be one of the best investments. If something goes wrong customer service is there to help you and Daysy is easy to use. Also in the long run it'll save you money since you'll know your fertility.
Liliana
Highly recommend Daysy because it is natural, easy to use, and is backed up by awesome customer service.
Lisa
Daysy allows me to take control of my cycle. I can use Daysy and not have to worry about making errors the way I would with the calendar or mucus method alone. I can be confident that I am understanding my body well and being responsible with my future!
Anonymous
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 / 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
(( MASK ))