---
product_id: 741089143
title: "Daysy 2.0 Medical Device for Cycle and Ovulation Monitoring | Indicates Fertile and Non-Fertile Days - 99.4% Accuracy | Also for Pregnancy Planning"
brand: "daysy"
price: "€ 453.47"
currency: EUR
in_stock: true
reviews_count: 5
category: "Daysy"
url: https://www.desertcart.fr/products/741089143-daysy-2-0-medical-device-for-cycle-and-ovulation-monitoring
store_origin: FR
region: France
---

# 99.4% accuracy algorithm Bluetooth sync with app Rechargeable Micro-USB battery Daysy 2.0 Medical Device for Cycle and Ovulation Monitoring | Indicates Fertile and Non-Fertile Days - 99.4% Accuracy | Also for Pregnancy Planning

**Brand:** daysy
**Price:** € 453.47
**Availability:** ✅ In Stock

## Summary

> 🌿 Own Your Cycle, Own Your Power — Naturally Precise, Effortlessly Smart

## Quick Answers

- **What is this?** Daysy 2.0 Medical Device for Cycle and Ovulation Monitoring | Indicates Fertile and Non-Fertile Days - 99.4% Accuracy | Also for Pregnancy Planning by daysy
- **How much does it cost?** € 453.47 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/741089143-daysy-2-0-medical-device-for-cycle-and-ovulation-monitoring)

## Best For

- daysy enthusiasts

## Why This Product

- Trusted daysy brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Empower Your Cycle:** Gain confidence and control with personalized cycle tracking that adapts and learns your unique rhythm over time.
- • **Seamless Smart Sync:** Bluetooth connectivity effortlessly transfers your data to the intuitive DaysyDay app for in-depth cycle insights.
- • **Eco-Friendly Wellness:** A natural family planning alternative that reduces synthetic hormone use, protecting both your body and the planet.
- • **Precision You Can Trust:** Leverages 35+ years of research and 5 million cycles for 99.4% accurate fertile day predictions.
- • **Quick & Simple Daily Check:** Measure basal temperature in under a minute with a clear color-coded fertility status—no guesswork needed.

## Overview

Daysy 2.0 is a cutting-edge medical device designed for cycle and ovulation monitoring with 99.4% accuracy. Featuring Bluetooth connectivity, a rechargeable battery, and an easy-to-use basal temperature sensor, it syncs seamlessly with the DaysyDay app to provide personalized fertility insights. Backed by over 35 years of research and millions of cycles, Daysy offers a natural, eco-conscious alternative to hormonal birth control, empowering users to plan pregnancy or avoid it with confidence and convenience.

## Description

Daysy It is more than just a device to monitor your fertility. It is a trusted companion that helps you to better know your body and its needs. Thanks to its advanced technology and ease of use, Daysy allows you to take care of yourself easily and effectively. With Daysy, you not only monitor your menstrual cycle, but also learn to listen to the signals your body sends you every day. It's like having an experienced friend always by your side, ready to advise and support you at all times. With Daysy, you not only gain a greater awareness of your body, but also a greater confidence in yourself and your abilities. With Daysy, every day is a new journey to discover yourself and your well-being.

Review: This has been such a game changer for me and my partner. I’ve been using this for 1 year and I will never go back to Birth Control. I was on the implant for 6 years before finally making the switch. We have had no accidents and I get lots of green days now. When you get the Daysy, it takes time for it to learn your cycle, you must be prepared to be patient. There are reviews on here moaning because they’ve only waited 3 months, it took mine about 8 months before I was consistently getting lots and lots of green days. From months 3-6 I was getting about 5 green days a month (including period). Now I’m sat at 15 green days a month. I’ve also seen people recommend Natural Cycles as a replacement for this. The Daysy is far superior. My sister in law was on Natural Cycles while I was on Daysy, she just recently welcomed a baby into the family two months ago. Patience is key with this device to reap the rewards. This isn’t a ‘quick fix’. You are potentially undoing, years of birth control / hormone damage. Your body needs time to sort itself out and you will get a lot of yellow / red days during this time period. Yes it’s frustrating but my god it’s so worth it.
Review: I have just been using for a little while but the instructions are really good and clear and it is super easy

## Features

- ADVANCED TECHNOLOGY: Intuitive and simple operation, Bluetooth technology for transferring data to mobile phones and tablets, rechargeable battery via Micro-USB cable, Daysy2.0 is the ideal solution for those looking for convenience and efficiency.
- PRECISE AND RELIABLE: Based on your data, as well as 5 million menstrual cycles and over 35 years of research, Daysy algorithm calculates non-fertile days with 99.4% accuracy.
- EASY TO USE: Measure your basal temperature under the tongue in just 30-60 seconds and in real time view your daily fertility status - fertile or non-fertile - via a simple colour system.
- NATURAL FAMILY PLANNING: Daysy, is a microcomputer equipped with software that uses an algorithm that can learn and adapt to your cycle, indicating you precisely when you are NOT fertile and when you are. So you can decide whether to avoid or seek pregnancy in a targeted manner, while also monitoring ovulation regularity and hormonal balance.
- APP: The "DaysyDay" app allows you to enter more information and presents you with graphs, averages, details and summaries, giving you an in-depth overview of your cycles. You can share this information, or part of it, with your partner, doctor or our expert team. Monitoring your entire hormone cycle has never been easier.
- ECO-SUSTAINABLE: The precision and reliability of this device provide an environmentally friendly alternative to the daily intake of synthetic hormones, which by eliminating through body fluids, enter the water cycle with a devastating impact on the environment and the ecosystem. This gives you two benefits: the protection of your well-being and that of the environment in which we all live.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01HNCPTWQ |
| Best Sellers Rank | #41,403 in Health ( See Top 100 in Health ) #93 in Family Planning & Birth Control Products |
| Manufacturer | Valley Electronics AG |
| Manufacturer reference | 7629999054073 |
| Product Dimensions | 4.6 x 4.8 x 2.2 cm; 40 g |

## Product Details

- **Age range (description):** Adult
- **Brand:** Daysy
- **Colour:** White
- **Included components:** Battery
- **Special features:** High Accuracy

## Images

![Daysy 2.0 Medical Device for Cycle and Ovulation Monitoring | Indicates Fertile and Non-Fertile Days - 99.4% Accuracy | Also for Pregnancy Planning - Image 1](https://m.media-amazon.com/images/I/61gEPwPs6WL.jpg)

## Questions & Answers

**Q: Is Daysy reliable and safe?**
A: Yes, Daysy is a medical device with an accuracy of 99,4%

**Q: How soon can I trust Daysy's results?**
A: You can trust Daysy's results starting directly from day one.

**Q: Who can use Daysy?**
A: Daysy is for anyone who menstruates, whether you work shifts, are a mom, want to conceive, wish to prevent pregnancy, or are dealing with cycle-related issues like PCOS or endometriosis.

**Q: How long does the temperature measurement take?**
A: The measurement takes just about 60 seconds a day. Simply take your basal temperature each morning after waking up to monitor your cycle.

**Q: Do I always have to measure my basal temperature at the same time?**
A: No. What’s important is that you’ve rested for at least one hour and take your temperature immediately after waking, before getting up or moving around.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by L***E on 26 August 2023*

This has been such a game changer for me and my partner. I’ve been using this for 1 year and I will never go back to Birth Control. I was on the implant for 6 years before finally making the switch. We have had no accidents and I get lots of green days now. When you get the Daysy, it takes time for it to learn your cycle, you must be prepared to be patient. There are reviews on here moaning because they’ve only waited 3 months, it took mine about 8 months before I was consistently getting lots and lots of green days. From months 3-6 I was getting about 5 green days a month (including period). Now I’m sat at 15 green days a month. I’ve also seen people recommend Natural Cycles as a replacement for this. The Daysy is far superior. My sister in law was on Natural Cycles while I was on Daysy, she just recently welcomed a baby into the family two months ago. Patience is key with this device to reap the rewards. This isn’t a ‘quick fix’. You are potentially undoing, years of birth control / hormone damage. Your body needs time to sort itself out and you will get a lot of yellow / red days during this time period. Yes it’s frustrating but my god it’s so worth it.

### ⭐⭐⭐⭐⭐ Review
*by A***R on 5 September 2024*

I have just been using for a little while but the instructions are really good and clear and it is super easy

### ⭐ Review
*by D***L on 15 February 2025*

La verdad lo compre hace más de 8 meses por mi deseo de quedar en embarazo y no había puesto reseña esperando y mirando todas las opciones por si era solo a mi que no me funcionaba, hasta lo envié a Alemania y lo revisaron, dicen que funciona perfectamente pero que soy yo quien no sabe utilizarlo...como si abriendo la boca y meterse un medidor fuece de mucha ciencia, en fin por más que pedí devolución de dinero, no me lo dan porque a ellos si les funciona y claro no pierden...así que 300€ tirados a la basura...es más tengo aplicación de calendario menstrual gratuito en mi móvil y funciona mejor, aparte que aunque esté Daysi no me mide la temperatura, si me dice los días en que me va a llegar la regla y los días fértiles y los días que no, entonces para que tenerlo? Si me da la misma información que mi aplicación gratuita en móvil?no es confiable, porque loa información que da no es relevante y no me da seguridad que me ayudara a algo

## Frequently Bought Together

- Daysy Fertility Tracker – Natural Hormone-Free Ovulation Monitor & Fertility Awareness Device – Smart BBT Thermometer with App for Cycle Tracking, Conception, or Pregnancy Planning – FSA/HSA Eligible
- Taking Charge of Your Fertility, 20th Anniversary Edition: The Definitive Guide to Natural Birth Control, Pregnancy Achievement, and Reproductive Health

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*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-01-24*