Menstrual cycle

Discover more about your natural, female cycle!

For many women, the menstrual cycle is both a blessing and a curse. On the one hand, it is the basis for getting pregnant and having a baby. But for all the women who do not currently want to have a baby, having to take measures to prevent a pregnancy can be rather annoying. Many women also experience their monthly bleeding as upsetting. But it doesn‘t have to be like that!

Your attitude towards your body and your menstrual cycle is a question of mindset. The good thing is that the menstrual cycle can be calculated to know in advance when to expect your next period bleed and approximately when you will be ovulating. In order to plan your free time activities, a regular calendar-app usually suffices. But if you want to know as precisely as possible when your fertile and infertile days will be, Daysy will save you a lot of time, and its high accuracy will give you peace of mind. It reliably lets you plan a pregnancy or know when to use a barrier method during sex.

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Calculate your menstrual cycle with Daysy!

Daysy is a highly sophisticated fertility tracker with a unique algorithm. All it requires to quickly and reliably determine your fertility is your morning basal temperature. Take it underneath your tongue in the morning prior to getting out of bed. After only 30 to 60 seconds, Daysy will let you know that the measurement was a success by beeping twice. On some days, you will be asked to confirm that you currently have your period. The result is then displayed to you right away, and Daysy automatically records all results for you.

If you would like to look into more data beyond your fertility status, you can install the free app DaysyView on your smartphone and synchronise it with Daysy. This way, you have your data with you at all times and can check when to expect your next ovulation or your next period.

Your menstrual cycle: as individual as yourself!

After using Daysy for a while, you will see that your menstrual cycle is rather unique. Although the order of the different phases is the same for every woman, there are still significant differences. You might have a rather long period bleed or a short cycle altogether. The timing of ovulation is also different for every woman. Times when you are under a lot of stress might reflect in your cycle, as stress changes the cycle for many women. Just view this is as a sign that it is time to reduce your stress.

With Daysy you always have a clear overview of your cycle and can learn a lot about yourself and your body. Examining your individual cycle will make you feel close to your own body and less surprised by what it does.

Calculating fertile phases: simple and quick with Daysy

But Daysy can do more for you than just bring you closer to your body. Because Daysy lets you know your fertile and infertile days, you can use this knowledge to switch to natural contraception by avoiding sex during your fertile phase or using a barrier method such as a condom or a diaphragm. During your infertile phase, you no longer have to worry about the issue of contraception, because you can only get pregnant during your fertile phase. But please be aware that it does not suffice to calculate your menstrual cycle with the help of a calendar. Daysy's accuracy is only possible because Daysy works with a unique and sophisticated algorithm that was developed in several decades of research and studies. 5 million female cycles were recorded, analysed and evaluated. Daysy's software has been successfully used before in the LadyComp and has proven itself thousands of times. If you want to calculate the fertile phase of your menstrual cycle, you can rely on Daysy.

Learn more about the simple use of Daysy and the advantages of DaysyView now!


Daysy is a fertility tracker that uses the fertility awareness method by learning and tracking your menstrual cycle.