100 word company description

Daysy is a primarily female-staffed, global company with 30 years of experience in the world of fertility technology. Valley Electronics, the parent company, developed their first product, the Lady-Comp, in the 1980s. The Lady-Comp is currently the most popular fertility monitor internationally. Daysy, the company’s second product,  is the brainchild of CEO Natalie Rechberg, and makes the original, trusted technology compatible with your smartphone via the DaysyView app. Both fertility monitors use a unique algorithm that has been clinically tested for a proven 99.3% accuracy and 0.7 Pearl Index rating, making Daysy and Lady-Comp the only medically-certified, science-supported fertility monitors on the market. Daysy is committed to providing women with intelligent, effective, and easy solutions for fertility tracking.

30 word company description

Daysy is committed to creating smart, accurate, science-supported and most importantly, easy-to-use solutions for women who want to track their fertility. With Daysy and Lady-Comp, the company seeks to provide empowering, woman-centric choices in the field of fertility.


Interview with Daysy CEO Natalie Rechberg (678.3 KB)

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Our core values

  • Women who cannot, will not, or do not use hormonal contraceptives need accurate, hormone-free alternatives for preventing pregnancy.
  • Women planning a pregnancy deserve empowering tools that allow for full engagement in the conception journey.
  • Menstrual cycle awareness is a key contributor to women gaining knowledge and personal power.
  • Fertility tracking should not be difficult, time-consuming, or stressful for women.
  • Natural, side effect-free solutions to fertility tracking should be simple and easy enough to be accessible to all women who. want them, regardless of lifestyle.
  • Woman-centric fertility technology provides an opportunity for body literacy, leading to improved health, wellness and self-confidence.
  • Women should have the support they need to feel in control of their bodies and their fertility via intelligent technology matched with education

The Daysy demographic

For women between the ages of 17 and 45 with health-conscious lifestyles, who choose to avoid the negative side effects and safety issues inherent in existing methods of pregnancy prevention.

Women who are dissatisfied with the inaccuracies and inconvenience of existing methods for pregnancy prevention and planning.

Unlike pharmaceutical birth control methods, Daysy is side-effect free, yet competitive in terms of effectiveness. Unlike fertility tracking apps, ovulation tests, and wearable fertility technology, Daysy provides an intelligent, high-quality thermometer and app solution that ensures accuracy and confidence

Our key messages 

  • Daysy is the most effective, science-supported method of fertility tracking that allows women to calculate their fertile window easily, simply, and accurately.
  • Daysy is an empowering tool for both body and menstrual cycle literacy, improving women’s health, wellness, self-knowledge and self-confidence.
  • Daysy is fertility technology that meets women where they’re at - allowing them to choose to plan or avoid a pregnancy based on accurate data, simply presented.
  • Daysy is a fertility tracker that uses the fertility awareness method to track and learn your menstrual cycle using basal body temperature data.
  • Daysy tells you on which days of your unique cycle you can get pregnant and the days you cannot.
  • Daysy is the only scientifically proven fertility monitor, backed by 30 years of research.
  • DaysyView app provides a woman (and her partner) with a greater understanding of her menstrual cycle, so she is able to track her cyclic nature, moods and have a better understanding of her own body.

Our mission

Daysy is the most accurate, all-natural method of fertility tracking, allowing women to plan or prevent pregnancy easily, quickly, and accurately. Track your cycle and be in charge. 

Our mission is to provide women with the knowledge and tools they need to make informed and powerful choices about their menstrual cycle, their fertility, and their body. Your body. Your cycle. Your choice.

We support women who want to be in control of their own body and fertility. We provide intelligent technology for fertility tracking  that is both effective and empowering. We provide smart, clinically-proven and easy-to-use technology  both standalone and smartphone compatible devices - in the field of fertility awareness and body literacy.



In The News

November 2017

Süddeutsche Zeitung

Süddeutsche Zeitung 11/06/2017

Freiheit von der Pille

Jahrelang galt die Anti-Baby-Pille als Inbegriff weiblicher Selbstbestimmung. Heute sehen immer mehr Frauen, was sie auch ist: ein Medikament mit erheblichen Nebenwirkungen.

Viele wollen ohne Hormone verhüten. Aber wie geht das eigentlich?

September 2017

Friday Magazine

Friday Magazine 09/06/2017

Habt ihr von der Pille auch die Schnauze voll?

Die Nebenwirkungen der Antibabypille sind Thema wie nie, die Verkaufszahlen gehen konstant zurück.

Wie ists euch mit der Pille ergangen? Erzählt uns davon!

June 2017

Kara Maria Ananda

Kara Maria Ananda 06/10/2017

Become Confident in Fertility Awareness for Preventing or Planning Pregnancy

The benefits of the Daysy are that it's not just a period or ovulation predictor like many fertility apps available today. The Daysy is actually a computer device that uses a proprietary system developed by their parent company Ladycomp and researched for over 25 years.

I first learned about the Daysy when Natalie Rechberg, the CEO of Daysy, joined my Women's Healing Arts Teacher Training. I was impressed with learning her story, that her father had invented the LadyComp and had grown this into an international company with decades of research in fertility awareness technology.

May 2017

The Debrief

The Debrief 05/14/2017

Could This Thermometer Overtake The Pill As Our Go-To Method of Contraception?

Technology, however, has rebooted natural family planning in recent years, making it far more reliable and user-friendly, and as a result, women are increasingly ditching the pill in favour of it. The name has even changed – most women who use it these days refer to it as the fertility awareness method or (FAM).

One popular tool among FAM devotees is the Daysy fertility tracker. It’s a highly sensitive thermometer that reads basal temperatures (the lowest body temperature attained during sleep) and then feeds the data into its tiny onboard computer that uses a complex algorithm to figure out if you might be fertile.

February 2017

Dr. Jolene Brighten, Naturopathic Doctor

Dr. Jolene Brighten, Naturopathic Doctor 02/28/2017

Does Fertility Awareness Method Work?

Before we dive in I want to say this — many people, including doctors, are quick to dismiss this method, claiming that women are too lazy or too easily confused by their own bodies to successfully use this method.

I disagree.

My experience is that women are motivated to understand their body and prevent pregnancy. And I would argue that the only person who truly understands your body is you. Instead of dismissing women, doctors should be teaching them how their body works and the signs and symptoms of healthy hormones.

January 2017


Beobachter 01/31/2017

Antibabypille - Frauen verzichten immer häufiger darauf

Stimmungsschwankungen, mangelnde Lust und das Thromboserisiko sind dafür verantwortlich, dass die Pillenverkäufe abnehmen. Doch welche Alternativen gibt es?


Beobachter 01/31/2017

Die Pille ist ein Medikament, nicht ein Sugus

Mediziner müssen besser über die Risiken der Pille aufklären, sagt Frauenarzt David Ehm. Und er kritisiert die Medien für überspitzte Schlagzeilen.

Interview mit David Ehm - Facharzt für ­Gynäkologie und Geburtshilfe.

December 2016


cycledork 12/27/2016


As I mentioned in part 1 of my review I’m not generally interested in new technological devices. The “newest thing” is generally about making money by selling people technologies that they don’t need. After reading about Daysy and then trying it myself, I can honestly say that in my opinion Daysy is different. Daysy is designed to empower the consumers (women) by helping them to understand their own bodies and their own power.

November 2016


PCMag 11/17/2016

Trying to Conceive? 7 High-Tech Fertility Monitors to Try

For at least the length of recorded history, humans have been attempting to plan and prevent pregnancy. From the practice of drinking lead in hopes of preventing pregnancy in ancient China, to dumping water on women to boost fertility in Hungary, there's always some wives' tale circulating about how women can harness their reproductive cycle.

Kelly Brogan, MD

Kelly Brogan, MD 11/03/2016

The Pill and Your Mood

What if I told you that a product is available that can interfere with your hormones to the extent that your daily and monthly rhythms are no longer operational? And because you will no longer have functional brain to ovary signaling, you will likely avoid conceiving if you have sex during what would otherwise have been your 6 fertile days a month. Of course this product’s hormonal effects also leave you with the sense that everything is stable and predictable which is something like turning the white noise up so loud that you don’t hear your own baby crying.

October 2016

The Culture Trip

The Culture Trip 10/12/2016

The Pill May Be Wrecking Your Health

It has revolutionized women’s sexual and reproductive agency – but the birth control pill has a dark side. In light of a recent study linking the tiny tablet to depression, we explore the potential health fallout for a generation who came of age during a hormonal contraceptive boom.

The Guardian

The Guardian 10/03/2016

The pill is linked to depression - and doctors can no longer ignore it

A newly published study from the University of Copenhagen has confirmed a link between hormonal contraceptives and depression. The largest of its kind, with one million Danish women between the ages of 15 and 34 tracked for a total of 13 years, it’s the kind of study that women such as me, who have experienced the side-effects of birth control-induced depression first hand, have been waiting for.

September 2016

BravoTV - Manzod With Children

BravoTV - Manzod With Children 09/18/2016

Daysy makes her Prime Time TV debut in the USA!

Lauren Manzo Is Ready to Have a Baby!
And has bought everything she needs to help get this process going.


cycledork 09/13/2016

I’ve never been one to get all excited about the latest technological gadgets. It took me forever to get an iPhone and my laptop is six years old (and still works great by the way thank you!). So when I first heard about Daysy a year or so ago I wasn’t particularly interested.

April 2016


MercatorNet 04/27/2016

The rise and rise of natural family planning

All the way back in 2010 Laura Wershler, executive director of Sexual Health Access Alberta (formerly known as Planned Parenthood Alberta), lamented the lack of knowledge in her field regarding natural family

March 2016

Alanis Morissette

Alanis Morissette 03/04/2016

From Birth Control to Body Literacy: The Power of the Pro-Period Movement
Ricki Lake, Abby Epstein & Holly Grigg-Spall
The technology industry has stepped up where the pharmaceutical industry has failed to offer anything more than variations in delivery of the same synthetic hormone-based treatments.

October 2015

Mind Body Green

Mind Body Green 10/31/2015

The Pill Almost Ruined My Marriage. Here's What I Wish More Women Knew About Hormonal Birth Control
Author, Holly Grigg-Spall, shares why she got off the pill and started using daysy.


GreenMedinfo 10/27/2015

Natural Birth Control as Effective as the Pill
With evidence mounting of the adverse effects of the birth control pill and hormonal contraceptives, women are ditching the drugs in droves and searching for a natural alternative that can equal the pill in effectiveness and convenience.

July 2015

marie claire

marie claire 07/10/2015

Coming Off The Pill: What Are The Alternatives?

Are you and the pill over? You’re done with its crap - the weight gain, the hormonal spikes and the increased risk of breast cancer - and after a long-term relationship you’ve decided it’s time for you to seek out a change for your own good. Whatever. You’re over it. But what are you going to do now? Like a newly single lady, you need to assess your options and move on. You need to find out what is out there and see what you’ve been missing.

Natural Family Planning

Log into any apps account and type in the words period tracking and you’ll be faced with an abundance of apps – such as Daysy, Wink and ONDO - that will help you keep an eye on whether you’re meant to be ‘on’ or not. These, as well as a high-tech thermometer that promises to calculate your chances of getting pregnant are becoming the new fangled ways to keep on top of your cycle and potentially prevent an unwanted pregnancy. Harking back to forms of Natural Family Planning (or the ‘rhythm method’) can help track your fertility.

Good for you if: you’re up for keeping a daily record of your fertility signals (e.g. temperature, fluids coming from your cervix) and you have time to learn as it can take up to six menstrual cycles to be fully up to scratch with this method.

April 2015

Focus Online

Focus Online 04/23/2015

Verhütung? Ja, aber bitte natürlich!

Hormonelle Präparate zur Empfängnisverhütung gibt es zur Genüge, doch leider haben viele von ihnen Nebenwirkungen. Wer regelmäßig die Pille nimmt, muss sich gegebenenfalls mit Kopfschmerzen, Depressionen, Übelkeit und gar Libidoverlust herumschlagen.

February 2015

Focus Online

Focus Online 02/18/2015

Welche Methode der Verhütung ist natürlich und sinnvoll?

Viele Frauen muten ihrem Körper einiges zu, um eine ungewollte Schwangerschaft zu vermeiden. Darunter leidet oft nicht nur die Gesundheit, sondern auch das Liebesleben. Eine natürliche Verhütung wirkt sich hingegen in der Regel nicht negativ aus.