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Knowing when you ovulate can help you plan for sex at the right time... and therefore improve your chance of getting pregnant! Ovulation normally happens about 14 days before your period starts. If your average menstrual cycle is around 28 days for example, you ovulate around day 14, and your most fertile days are the 12th, 13th and 14th. Since every body is different, your cycle can be a bit shorter or longer. If you don't want to do the math and are looking for a simple solution to track your menstrual cycle, fertility trackers like Daysy are the perfect tool for you. One study showed that 81% of couples who track their fertility and timing intercourse on their fertile days will conceive within 6 months. Source: C Gnoth et. al. Hum Reprod. 2003 Sep;18(9):1959-66

Daysy is a lifestyle fertility tracker that uses the basal body temperature measurement method to determine fertile as well as infertile days and can be used for conception and cycle monitoring. Daysy provides more than 99% accurate analysis of your current cycle data, so you can monitor your cycle in a natural way and determine exactly which phase you are in. The smart Femtech device combines the temperature method with a sophisticated self-learning algorithm based on more than 30 years of cycle research and experience based on the analysis of over 10 million cycles.

How to Use

Step 1
Take your temperature in the morning when you wake up, but before you get out of bed. If you have your period, confirm it directly on your Daysy, and within seconds Daysy will calculate your fertility status and display it via its built-in LEDs.

Step 2
Daysy connects to the Daysy app via Bluetooth® so that the data can be easily synchronized with a smartphone or tablet.

Step 3 
Voilà! You receive your current fertility and cycle status, as well as other useful information that you can easily share with your partner or your health care provider.

You can download the quick guide here.


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If you have any questions about the product or simply want to say hi, you can always drop Victoria a message at Victoria is one of our badass superwomen who would give the last tampon from her purse to answer your questions or concerns!

About Daysy

Valley Electronics AG, based in Zurich, Switzerland, is an international research-based medical technology company with a long track record of developing and distributing fertility trackers. Thanks to this accumulated knowledge, Valley Electronics has been able to manufacture and bring to market reliable, precise, and user-friendly technology for natural fertility awareness.

Natalie Rechberg-Egly, founder and CEO of Daysy, is a pioneer in the femtech industry. Thanks to this accumulated knowledge, the company has been able to develop and provide reliable, natural and user-friendly technology to track fertility.

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