With Daysy you know your daily fertility status - and whether you need contraception
The period calculator Daysy is the ideal support for a hormone-free life in unison with your natural, female cycle . Daysy calculates your fertile and infertile days within the blink of an eye - and simple, quick and comfortable. In combination with the free app "DaysyDay", you always have an eye on your cycle data and can plan your free time activities in comfortable accordance with your personal rhythm.
Calculating your fertile days with the period calculator Daysy is particularly simple and time-saving: All you have to do is take your morning basal temperature before getting up. The measurement takes only about 60 seconds and is done underneath your tongue while you are still lying in bed. Daysy automatically records the result for you. Now all she needs is from you to confirm if you are currently menstruating. Then you’re done! The result is displayed right away either as a red (you are fertile / possible fertile), green (you are not fertile) or yellow (learning phase or cycle fluctuation) light.
Daysy is reliable
30 years of research and development as well as 5 million evaluated female cycles were necessary for the creation of this algorithm. The software Daysy uses for its calculation has been proving itself in the many years it has been serving the LadyComp. It enables Daysy to offer you the combination of a high level of safety in calculating your fertility and a very simply and time-saving application.
Daysy: modern technology, compact design, convenient app
In addition to Daysy's highly developed technology, a lot of thought has gone into her slender and compact design. Daysy is not much larger than a conventional thermometer and will accompany you wherever you go. But the period calculator Daysy still offers more: With the convenient and free app "DaysyDay", you can always keep an eye on your cycle data. Just install the app on your smartphone and synchronise it with Daysy.
"DaysyDay" gives you insights into your temperature curve or simply keeps you updated about your current cycle. The convenient display of the prediction done by Daysy additionally enables you to adjust your (love) life to your natural female rhythm. Plan your free time activities such as going to the pool when you know your period will not constrict you, and reserve time with your partner during your infertile phase.
Daysy offers you the opportunity to live in harmony with your body. Time-saving, comfortable, modern and accurate. Discover all of Daysy's advantages now!
For optimal use of Daysy, we recommend that you should have slept sufficiently (at least one hour) before the measurement. It is important that you take your temperature immediately after waking up, before getting up and becoming active. Measure below your tongue, with your mouth closed, and keep the device steady while it is measuring. Video Tutorial
No. You should have at least one hour of good quality sleep before the measurement. It is important that you take your temperature immediately after waking up, before getting up and becoming active. For optimal use of Daysy, try to get at least 3 or more hours of sleep before measuring. Less sleep can result in more temperature fluctuations causing Daysy to give more fertile or potentially fertile days.
You can confirm or remove menstruation at any time during the current day. Simply press the button to turn on your Daysy, and then press and hold the activation button until the violet light lights up without flashing and you hear a "beep." Confirm you are menstruating for each day of active bleeding and for a minimum of three consecutive days. You can also remove menstruation data for the same day by turning Daysy on and pressing and holding the activation button until the purple/blue light is no longer solidly lit and begins flashing again.
The first 2-4 cycles of use are considered Daysy's learning phase. Over the course of her learning phase, Daysy will come to understand your cycle and begin narrowing down your fertile window. Daysy remains quite cautious and conservative during this time, which is why Daysy is accurate starting the very first day.
You can rely on Daysy's results starting the very first day of use. In the beginning, you will see more yellow and red days because Daysy is still learning your unique cycle. You will see more green days as Daysy comes to understand your cycle and can narrow down your fertile window. The more regularly you measure, the better.
Yes. Irregular cycles are not a problem for Daysy/Lady-Comp. Even with irregular cycles, all Valley devices distinguish between non-fertile and fertile days with a very high accuracy. However, in case of extreme fluctuations between cycles it will give you more red and yellow lights and less green lights. Fluctuations of several days are usually not a problem. If you have questions about your unique cycle, please reach out to our team of experts.
No! DaysyDay is free! There are no in-app purchases or upgrade fees.
In general, you should skip measurements during illness and while you are taking medication that can have an influence on your body temperature or cycle. If you have doubts, contact your doctor or our customer service team.