---
product_id: 137275356
title: "Fertility Tracker | Natural Hormone-Free, Ovulation Monitor & Fertility Awareness Device, Smart BBT Thermometer with App, Cycle Tracking"
brand: "daysy"
price: "€ 561.78"
currency: EUR
in_stock: true
category: "Daysy"
url: https://www.desertcart.hr/products/137275356-fertility-tracker-natural-hormone-free-ovulation-monitor-and-fertility-awareness
store_origin: HR
region: Croatia
---

# 99.4% accuracy Free smart app integration Long-lasting lithium-ion battery Fertility Tracker | Natural Hormone-Free, Ovulation Monitor & Fertility Awareness Device, Smart BBT Thermometer with App, Cycle Tracking

**Brand:** daysy
**Price:** € 561.78
**Availability:** ✅ In Stock

## Summary

> 🌿 Own Your Cycle, Own Your Future

## Quick Answers

- **What is this?** Fertility Tracker | Natural Hormone-Free, Ovulation Monitor & Fertility Awareness Device, Smart BBT Thermometer with App, Cycle Tracking by daysy
- **How much does it cost?** € 561.78 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/137275356-fertility-tracker-natural-hormone-free-ovulation-monitor-and-fertility-awareness)

## 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

- • **Legacy of Innovation:** Crafted in Germany with 40+ years of research for cutting-edge fertility insights.
- • **Hormone-Free & Natural:** Track your cycle naturally without invasive methods or hormones.
- • **Precision You Can Trust:** 99.4% accuracy in identifying fertile windows means no more guesswork.
- • **Seamless Smart Tracking:** Bluetooth-enabled smart BBT thermometer syncs effortlessly with a free app.
- • **Instant Fertility Status:** Clear red/green light instantly shows your fertile or non-fertile days.

## Overview

Daysy Fertility Tracker is a hormone-free, FDA-registered smart basal body temperature thermometer that predicts ovulation with 99.4% accuracy. Designed in Switzerland and crafted in Germany, it uses Bluetooth connectivity to sync with a free app, providing instant red/green fertility status indicators. With over 40 years of research backing it, Daysy empowers millennial professionals to take control of their reproductive health naturally and confidently.

## Description

Buy Daysy Fertility Tracker | Natural Hormone-Free, Ovulation Monitor & Fertility Awareness Device, Smart BBT Thermometer with App, Cycle Tracking: Ovulation Tests - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## Features

- Take Control of Your Fertility with Daysy: A hormone-free, precision fertility tracker. Easily predict your fertile and non-fertile days with the help of its free app, empowering you to make informed decisions about your health and family planning
- Know Your Fertility Status in an Instant: Daysy uses a simple red (fertile) or green (not fertile) light to clearly show when you're most likely to conceive, making it easier than ever to track your cycle
- Crafted in Germany & Designed in Switzerland: Daysy brings over 40 years of research and innovation to your fingertips. Trust a family-run company dedicated to giving you accurate, cutting-edge fertility insights
- Accurate Results You Can Count On: With a stunning 99.4% accuracy, Daysy reliably identifies your fertile and non-fertile days, making it your tool for smart family planning and cycle tracking. Say goodbye to guesswork and hello to certainty
- Forget About Subscriptions: Daysy's free app is all you need for tracking your cycle. By combining basal body temperature with advanced algorithms, it provides personalized fertility insights, going far beyond simple period tracking
- Hormone-Free Fertility Monitoring: Track your natural cycle without hormones or invasive methods, using only basal body temperature readings combined with sophisticated algorithms for daily personalized insights into your fertility status
- Simple Daily Temperature Tracking: Take your basal body temperature each morning with the smart BBT thermometer, and Daysy's advanced technology analyzes the data to predict ovulation and identify your fertility window throughout your cycle

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01HNCPTWQ |
| Additional Features | BBT Precision, Cycle Tracking, FDA-registered, Hormone-free, Ovulation Prediction |
| Age Range Description | Adult |
| Battery Cell Type | Lithium Ion |
| Best Sellers Rank | #232,924 in Health & Household ( See Top 100 in Health & Household ) #73 in Ovulation Tests #1,777 in Activity, Health & Wellness Monitors |
| Brand | Daysy |
| Built-In Media | Daysy sensor, sensor cap, and charging cable |
| Color | white |
| Connectivity Technology | Bluetooth, USB |
| Customer Reviews | 4.5 4.5 out of 5 stars (328) |
| Display Type | Digital |
| Item Dimensions | 1.81 x 1.89 x 0.87 inches |
| Item Length | 5.1 inches |
| Item Weight | 0.04 kg |
| Manufacturer | Valley Electronics AG |
| Model Name | Daysy |
| Model Number | Daysy |
| Style Name | Specialized |
| Unit Count | 1 Count |

## Product Details

- **Age Range (Description):** Adult
- **Battery Cell Composition:** Lithium Ion
- **Brand:** Daysy
- **Color:** white
- **Connectivity Technology:** Bluetooth, USB
- **Display Type:** Digital
- **Included Components:** Daysy sensor, sensor cap, and charging cable
- **Model Name:** Daysy
- **Special Feature:** BBT Precision, Cycle Tracking, FDA-registered, Hormone-free, Ovulation Prediction
- **Style:** Specialized

## Images

![Fertility Tracker | Natural Hormone-Free, Ovulation Monitor & Fertility Awareness Device, Smart BBT Thermometer with App, Cycle Tracking - 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.

## 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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**Shop now:** [https://www.desertcart.hr/products/137275356-fertility-tracker-natural-hormone-free-ovulation-monitor-and-fertility-awareness](https://www.desertcart.hr/products/137275356-fertility-tracker-natural-hormone-free-ovulation-monitor-and-fertility-awareness)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-08-14*