What is Daysy?

Daysy is handheld medical device which tracks individual fertility and menstrual cycles. Daysy offers a hormone-free solution to managing your fertility, cycles, and health. By calculating and forecasting when you are fertile and when you are not. Daysy empowers you to make informed decisions around planning or preventing a pregnancy. A perfect gift of love to yourself, bringing awareness to your body, your hormones and your health.

  • • Health-conscious women who simply want to track and understand their bodies and reproductive cycles.

    • Sexually active women who want to avoid pregnancy but do not want hormonal or invasive interventions.

  • • Teenagers who have just started menstruating and want to learn about their hormones and track when their next bleed will come.

  • • Couples planning a pregnancy who are wanting to pinpoint their most fertile day.

    • Women with hormonal imbalances, irregular cycles or reproductive system illnesses that are wanting to monitor their natural healing/treatments.

How does Daysy Inform you?

Every morning, upon waking, you measure your basal body temperature under your tongue for just 60 seconds and enter menstruation if necessary. Daysy immediately analyzes your cycle data and shows you if you are fertile or not. Daysy does this by showing your fertility status using different colour displays.

How does Daysy work?

Why you can rely on Daysy

Due to an intelligent algorithm based on scientific evidence, decades of experience, and well engineered technology, Daysy provides the highest quality, reliability, and precision in fertility tracking. Daysy calculates the infertile days with an accuracy of more than 99%. Daysy is German-made and Swiss designed, with the foundation of over 3 decades of pioneering research, innovation, and experience from a family-run company.

Switzerland-based Valley Electronics AG, creator of Daysy, is certified according to EN ISO 13485, meaning that our quality management is oriented toward the latest standards for medical products. All procedures at Valley Electronics AG are regularly subjected to internal and external overview. This allows us to continuously improve on and innovate our family of fertility trackers.

Valley Electronics AG is registered with the FDA and is required to comply with medical device regulations that are subject to regular inspections by the FDA in our Zurich office and suppliers. Furthermore, our quality management system is audited yearly by an independent European Notified Body.

Daysy syncs with your mobile device

The DaysyDay app makes Daysy compatible with smartphones and offers more options for digitally expanding your unique menstrual cycle knowledge. DaysyDay also gives you the ability to share your information with your partner, doctor, or our expert international team.

Your individual cycle calendar, temperature graph, menstrual and fertility statistics are all displayed on the DaysyDay App. You can also plan for weeks ahead by viewing your individual fertility prognosis.

Download for iOS

Download for Android

Watch the video here

Key Features of the Daysy Day App

• Past, Present and Future
The easy to read calendar and an uncluttered temperature curve make it easy to view your fertility status, ovulation, and menstruation for the past, for today, and what is predicted in the coming month.

• Identify Irregularities
The temperature curve and easy to read average and individual cycle statistics can help you easily identify cycle irregularities and provide insights on how current events effect your overall cycle.

• Take Notes
The newly designed data cards let you easily track additional cycle features. Track cervical mucus, intercourse, and your own notes about your fertility and cycle.

• Contact Our Expert ​Team
Use the feature in the app to easily reach out to our expert team if you need advice and support. Our team is here to help you every step of your fertility tracking journey.

• Share your Data

Invite your partner to download the DaysyDay Partner app and decide which data to share.