Meet Daysy – your personal fertility tracker.


Daysy lets you make the choice!


Daysy is a fertility tracker that uses the fertility awareness method by learning and tracking your menstrual cycle. Daysy shows you the days you are fertile or not. This way, you can plan a pregnancy or use a hormone-free, barrier method to prevent a pregnancy, you choose.

Daysy will show you if you are fertile or not with an accuracy of 99.4%. It is all natural and free of side effects.


A fertility tracker as easy as 1,2,3...


Just 30 seconds once a day


1.   Every morning, take your temperature under your tongue.

2.   Confirm menstruation on the days you have it.

3.   Daysy evaluates your data and calculates your fertility status

      for the next 24 hours.

You can rely on Daysy.


The fertility monitoring algorithm in Daysy has been developed with feedback from millions of cycles and uses advanced statistical methods to calculate your fertility status.


Daysy's program relies on the Lady-Comp algorithm. The Lady-Comp, is the most popular fertility tracker internationally.


The fertility tracker is programmed to accurately determine and display the time of ovulation in the female body by taking your daily basal body temperature.



Red = fertile

Red days are when to plan for a baby.


Red blinking = ovulation day


Green = infertile

Green days will not lead to pregnancy.


Yellow = learning phase/cycle fluctuations

Daysy needs to learn more about you. If preventing pregnancy,

treat as red days.

Daysy has an App.


Simply connect your Daysy fertility calculator to DaysyView to see all your cycle data.


Once daysy is connected to her app, she will automatically start syncing data with DaysyView.


DaysyView lets you see your temperature data and fertility prognosis.


Share your data with your loved one, and let them know when it’s the “right” day.

Meet DaysyView.


  • See your daily, weekly and monthly status of fertility
  • See your color - coded monthly calendar
  • Make notes
  • See your cycle forecast
  • See your temperature curve and values
  • See your fertility and cycle statistics
  • Share your data with your loved one through DaysyView Partner App
  • Enter sexual intercourse
  • Get notified when something changes in your cycle
  • Contact our expert team for advice and support
  • Get free cycle analysis

Every woman is different,


but these are the basic physiological factors to a woman's menstrual cycle that you should know:


  • Every woman usually only ovulates once per cycle.
  • If two or more ovulations take place, these would occur within 24 hours.
  • After ovulation, the egg can be fertilised for a maximum of 18 hours.
  • Inside the female body, sperm remain able to move and fertilise for a maximum period of 5 days.


This means that a pregnancy can occur on only 6 days, which are the 5 days prior to ovulation and the day of ovulation itself. Daysy calculates these 6 days and displays them to you.

Exactly how does the fertility calculator Daysy work?


Daysy recognizes a woman's ovulation in her cycle through a morning measurement of the basal temperature. Simply measure the temperature under your tongue to know whether you are currently fertile or not. Depending on the phase of your cycle, you will either see a green light or a red light.

Beyond that, Daysy records the course of your cycle and shows you which processes are currently taking place in your uterus. There is hardly a simpler way to attain awareness of your female body.

When comparing Daysy to your alternatives, what makes this cycle monitor so special is that it bears no side-effects: no hormones, no thrombotic risk, or any other accompanying effects. It does not get any better than that!

Customer Care Details


Tel:    011 704 1156