Daysy
Your personal fertility tracker

Daysy - your personal fertility tracker

Daysy is the hormone free solution for managing your fertility, cycles, and health. Daysy calculates when you are fertile and when you are not. On your fertile days, it is possible for you to conceive; outside of your fertile window, it is not. Daysy and its free cycle app supports you in empowered and informed decision making.

Daysy displays your fertility status as a simple red (you are fertile / possibly fertile) or green (you are not fertile) light.

Daysy is a temperature based cycle tracker, German made, Swiss designed, with the foundation of over four decades of pioneering research, innovation, and experience from our family run company.

Daysy cycle tracker distinguishes between non fertile and fertile days with an accuracy of over 99%.

Daysy requires no subscription, the cycle app is free. Daysy is not a simple period tracking App. Daysy tracks and predicts ovulation and fertility cycles accurately. Daysy uses a combination of basal body temperature readings and an advanced algorithm to provide personalized insights into a woman's menstrual cycle, helping users to understand their fertility status on a daily basis.  Daysy is FSA eligible. We offer flexible payment options.

 

Daysy is the hormone-free solution for managing your fertility, cycles, and health. Daysy calculates when you are fertile and when you are not. Daysy supports you in empowered and informed decision-making.

Daysy is German-made, Swiss-designed, with the foundation of over three decades of pioneering research, innovation, and experience from our family-run company.

Daysy distinguishes between non-fertile and fertile days with an accuracy of over 99%.

Daysy requires no subscription, the app is free. Daysy is FSA eligible. Daysy has flexible payment options.

 

Daysy cycle tracker highlights:

  • Accurate Fertility Tracking: Daysy uses basal body temperature and an advanced algorithm to accurately predict fertile and non-fertile days.

  • Ease of Use: The device is simple to use with a straightforward daily routine of temperature measurement.

  • No Hormones: Daysy offers a natural alternative to hormonal methods, making it suitable for those who prefer non invasive methods.

  • Personalized Insights: The app provides individualized feedback and insights about your menstrual cycle, helping you understand your body's rhythms better.

  • Connectivity: Daysy syncs with its app, allowing you to easily track your cycle, view your fertility status, and access your data anytime.

  • Data Security: Your personal data is stored securely on the device, ensuring privacy and safety.

  • Educational Resources: The app provides educational information to help users learn more about their menstrual health and fertility.

  • Customer Support: Daysy offers comprehensive support through their customer service and community resources.

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.
What our customers say:
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
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
I know myself, and a lot of women see the price and think it is a lot - but it is absolutely a lifetime investment that pays off in spades.
Joanna
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 = non-fertile 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 DaysyDay!
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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