Fertility Tracking Method

What Is The Fertility Window

Barrier Contraceptives Are Frequently Overused, Being Used When There Is No Risk Of Pregnancy.

By tracking your fertility you can identify the 6-8 days when intercourse carries the risk of pregnancy. The process of tracking when those days occur each cycle is called fertility awareness or the Fertility Awareness Method (FAM).

The Daysy fertility tracker is a high tech thermometer, coupled with it’s own app, DaysyDay. It draws on the science of different models of fertility awareness to provide highly accurate calculations of your fertility status each day - fertile or not fertile. It’s self-learning algorithm does all of the necessary calculation work for you to come to these conclusions. This methodology is known as the Fertility Tracking Method (FTM).

The intuitive nature of the Daysy fertility tracker device itself reduces the potential for any user errors and mistakes.
Daysy combines:
- A very precise temperature sensor that gets the most accurate data reading possible.
- A unique, highly intelligent algorithm based on a database of over 5 million menstrual cycles.
- An intuitively designed tracker that eliminates the potential for user error.

Daysy Makes Fertility Tracking Precise And Accurate

All users have to do to practice FTM accurately is to regularly measure their basal body temperature (BBT) and correctly input their menstruation days. The Fertility Tracker takes over all further steps and determines your fertility status.

Daysy has a very precise and sensitive sensor with which you take your BBT when you wake up. This design is unique to Daysy. Many other methods of fertility tracking require a separate thermometer, which can be of varying quality, leading to measurement inaccuracies due to the thermometer calibration or as part of transferring the temperature manually to an app for review.

Daysy is all-in-one, taking your temperature, storing your data, and calculating your fertility status within one single device. Accordingly, the lights on Daysy light red when you are fertile and green when you are not fertile.

No note-taking, no forgetting, no worries - Daysy does all the hard work for you!

Daysy’s intelligent algorithm is supported by the science of fertility awareness, a database of over 5 million menstrual cycles, and the experience with our 500,000 users. Possible factors that can impact the cycle and lead to delayed ovulations, such as stress or travel, are all incorporated into the algorithm.

Daysy make fertility tracking accessible and lets you decide when barrier contraception is needed.

You Can Rely On Daysy

Unlike other fertility awareness methods, Daysy makes it easy to find out when you are fertile and when you are not.

The simple and intuitive operation of Daysy lets you know the current status of your fertility within seconds. All you have to do is measure your basal body temperature under your tongue with Daysy in the morning, immediately after waking up but before getting up. Additionally, you enter when you have your period. Based on your data and those from 5 million menstrual cycles and 35 years of research, Daysy’s algorithm calculates your fertility within seconds.

With these 3 colors you can keep track of your cycle and fertility status:

- If Daysy shows you a red light, you are fertile / possibly fertile.

- If Daysy shows you a green light, you are not fertile.

- If Daysy shows you a red flashing light, that is your predicted day of ovulation.

- Yellow days indicate cycle fluctuations. They can also mean that Daysy is still in the learning phase and should be considered potentially fertile.

During your fertile window, it is possible to conceive; outside of your fertile window, it is not. Armed with this knowledge you and your partner can make better contraceptive choices.

Get To Know Your Body Better

A bonus with Daysy is the ability to explore your own menstrual cycle and get to know your body better. With a commitment of just a minute a day you can become more knowledgeable about your cycle and body. Our companion app DaysyDay gives you insight with cycle statistics and the ability to learn more about your health and wellness.

Daysy can help you to make friends with your body and connect with your cycle. 

The Ideal Way To Identify When You Really Need To Use Your Diaphragm

The Fertility Tracker Method is all-natural and hormone-free, meeting the needs of the woman who strives for a lifestyle that is health and wellness focused. 

Daysy is the hormone-free solution for managing your fertility, periods, cycles, and health. Know when you are fertile and when you are not, and have access to a sophisticated level of body literacy with all of your data, past, present and future accessible in the DaysyDay app. 


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  1. Lady-Comp Intelligent Fertility Tracker
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    Lady-Comp Intelligent Fertility Tracker
    From £485.00

    The proven way to manage your cycle.

    100,000’s of happy users managing their fertility around the world.

    35 years of history, helping couples go natural.

    Understand your fertility window to make better fertility choices.

    Two year manufacturers warranty.

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