--- product_id: 138792875 title: "Fertility Tracker & Digital Ovulation Tracker - Hormone-Free & Over 99% Accurate - Medical Device - Fertility Aid - Cycle tracking with App" brand: "daysy" price: "฿40065" currency: THB in_stock: true reviews_count: 11 url: https://www.desertcart.co.th/products/138792875-fertility-tracker-and-digital-ovulation-tracker-hormone-free-and-over store_origin: TH region: Thailand --- # 99.4% accuracy with smart algorithm Bluetooth sync with free app 60-second quick temp reading Fertility Tracker & Digital Ovulation Tracker - Hormone-Free & Over 99% Accurate - Medical Device - Fertility Aid - Cycle tracking with App **Brand:** daysy **Price:** ฿40065 **Availability:** ✅ In Stock ## Summary > 🌸 Own Your Cycle, Own Your Future ## Quick Answers - **What is this?** Fertility Tracker & Digital Ovulation Tracker - Hormone-Free & Over 99% Accurate - Medical Device - Fertility Aid - Cycle tracking with App by daysy - **How much does it cost?** ฿40065 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/138792875-fertility-tracker-and-digital-ovulation-tracker-hormone-free-and-over) ## 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 - • **Precision in a Minute:** Measure basal temperature under your tongue in just 60 seconds for instant fertility insights. - • **Hormone-Free & Natural:** A safe, non-invasive fertility aid that empowers natural family planning without medications or side effects. - • **Seamless App Integration:** Sync your data via Bluetooth to the free DaysyDay app for detailed cycle analytics and sharing options. - • **Effortless Cycle Tracking:** Color-coded display instantly shows your fertility status—no manual calculations needed. - • **Scientifically Proven Accuracy:** Backed by 40 years of research, Daysy delivers over 99% accuracy in identifying fertile days. ## Overview Daysy Fertility Tracker is a hormone-free, medical-grade device that measures basal body temperature in 60 seconds to accurately predict fertile days with 99.4% precision. Featuring a simple color-coded display and Bluetooth connectivity, it syncs seamlessly with the free DaysyDay app for in-depth cycle tracking and personalized fertility insights—empowering natural family planning with no subscriptions or hidden costs. ## Description Daysy is your reliable companion for natural family planning. In just 60 seconds a day, it measures your basal body temperature and precisely determines whether you are currently fertile or not. Using an advanced algorithm and your unique cycle data, Daysy is a that reliably calculates your fertility status with . No manual calculations or extra apps needed. Daysy is an innovative version of a basal body thermometer and offers a seamless and effortless way to track ovulation. With our , you can effortlessly sync your data to your phone for even more detailed cycle insights, including your temperature curve, predicted cycle calendar, and in-depth statistics. Each morning, right after waking up, measure your basal body temperature under your tongue with Daysy for 60 seconds. Daysy uses a color-coded system to show your fertile and non-fertile days directly on the device. For deeper cycle insights, sync Daysy with the optional DaysyDay app to track ovulation, spot irregularities, and monitor your temperature curve. It’s your personal cycle and ovulation tracker, combining a highly sensitive sensor with an intelligent algorithm. As an all-in-one fertility tracker, it identifies your fertile days, so you precisely know when a pregnancy is possible and when it’s not. Backed by 40 years of research, Daysy accurately distinguishes between your fertile and non-fertile days with 99.4% accuracy. In just 60 seconds, you will have certainty about your fertility. No manual calculations or extra apps needed. Daysy provides clear and reliable results. Using your unique menstrual cycle data, Daysy’s advanced algorithm performs in-depth analyses to accurately identify your fertile days. Daysy is a durable investment in your health. A reliable fertility monitor with no hidden costs and a free app. No subscription needed. No follow-up costs. ## Features - VERY ACCURATE - EASY TO USE: Measure your basal temperature under your tongue in just 30-60 seconds and use a simple color system to display your current fertility status - NATURAL FAMILY PLANNING: The intelligent cycle computer, with which you can get to know your very individual cycle, knows exactly when you are fertile and when you are not This means you can plan your pregnancy in the best possible way - FREE APP: In the app DaysyDay you can view details about your cycle and share them with your partner, doctor or our team of experts Cycle monitoring can be that easy - TECHNICALLY SOPHISTICATED: With intuitive ## Technical Specifications | Specification | Value | |---------------|-------| | Age Range Description | Adult | | Asin | B01HNCPTWQ | | Best Sellers Rank | 244,562 in Health & Personal Care (See Top 100 in Health & Personal Care) 152 in Ovulation & Fertility Test Kits | | Box Contents | Battery | | Brand Name | Daysy | | Colour | White | | Connectivity Technology | Bluetooth | | Customer Reviews | 4.3 4.3 out of 5 stars (314) 4.3 out of 5 stars | | Display Type | LCD | | Item Dimensions | 46 x 48 x 22 millimetres | | Item Weight | 0.04 Kilograms | | Model Name | [4629999054073] | | Model Number | Daysy | | Product Features | High Accuracy | | Resolution | 0.1 degree | | Style Name | Specialized | | Unit Count | 1 count | ## Product Details - **Age range (description):** Adult - **Brand:** Daysy - **Colour:** White - **Connectivity technology:** Bluetooth - **Display type:** Lcd - **Included components:** Battery - **Outer material:** Plastic - **Product care instructions:** Wipe Clean - **Special feature:** High Accuracy - **Specification met:** CE ## Images ![Fertility Tracker & Digital Ovulation Tracker - Hormone-Free & Over 99% Accurate - Medical Device - Fertility Aid - Cycle tracking with App - Image 1](https://m.media-amazon.com/images/I/61gEPwPs6WL.jpg) ## Questions & Answers **Q: We’ve just started using the Daysy, sometimes it takes a while to record the morning temperature. I know it’s a precision device but is that normal?** A: Hi. This is something I noticed as well when I started and I emailed Daysy about it. They said it can take up to 3 minutes to register your temperature and if there is a change of temperature in your mouth (i.e inhaling) it can take longer due to it re adjusting. I have had mine since Summer and noticed it does take longer on cold mornings and the device is cold. They said if it takes over 3 mins to contact them. I have always found them very helpful whenever I had any questions or concerns :). **Q: Can i easy switch over to this updated Daysy, from the previous model, by syncin', or do i need te dae mair?** A: I have not done this personally but I have read somewhere you can contact Daysy with regards to transferring your data over :) **Q: My first Daysy has stop't working with the app suddenly, my old email address wont recieve new mail, is there a way to transfer my data to 2.0 Daysy?** A: If you contact Daysy they can migrate it for you I believe. **Q: is this the latest version of Daysy so the 2.0 version? thank you so much** A: Judging by the blue band at the lid, it appears te be. Ma version uses a button battery, a cable, an' the lid is loose, an' connects via a short cable. The update has the blue bit te secure the lid/cap, charges by USB, an' connects via Bluetooth. I hink ma model has been retired, an' the listing updated te the new model. I'm no sure the model number, though. I only know the blue bit at the cap, is distinctive te the Bluetooth connect, USB charging version. Dunno if that helps? ## Customer Reviews ### ⭐⭐⭐⭐⭐ Life Changing *by on Reviewed in the United Kingdom 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. ### ⭐⭐⭐⭐⭐ The best solution - it’s a must buy!!!! *by on Reviewed in the United Kingdom 14 July 2021* I have used this product for over 1 year. This is the best thing ever happened to my relationship. Before I started using this I tried the The stick that goes in your hand and that made me extremely moody and made me bleed a lot. Then I started using birth control pills and they messed me up super hard. I was moody, depressed and angry all the time and they made my relationship a hell. After that I tried the non hormonal IUD and that made me bleed like crazy.And finally, thank god I found this product on Youtube and decided to try it on because condoms are lame. Never looked back since, this is well worth the price, it made my relationship so much better just by not being moody and depressed from hormones that are not healthy for you. And every month it gives us something exciting to look forward to. This is easily the most positively impactful thing that helped my relationship grow. Would totally recommend if you’re looking at birth control junk and other methods that mess up your body and mental health. ### ⭐⭐⭐⭐⭐ A very positive and reassuring experience *by on Reviewed in the United Kingdom 3 December 2020* It’s practical, easy and intuitive to use, but the thing that stands out for me is actually the experience as a whole, from the packaging, the usability of the app, through to the feeling of community that comes with it.Family planning is a medical topic, fair enough, but as a couple it was a lot easier to get onboard with this system when we received this lovely package and started going through the booklet. I’d go as far as to say it’s almost like the Apple experience when unboxing a new iPhone. It’s nothing i can put my finger on, it’s just that feeling of quality and good design.We clicked around a whole bunch of links and read through loads of social media pages and forums and it really helped set our mindset as being part of community of users who would share advice and experience - important as NFP usually seems more and more complicated the more you read up on it. “Fumbling around in the dark with NFP” is a nice analogy of how newbies to NFP can feel which is why i felt compelled to share our experience.This device might not be for you if you would never have faith in a natural method of family planning and neither would it be for you if you didn’t have the patience to work with it, just like any NFP system, but this is waaay easier than the other options we’ve seen and tried out.No unwanted pregnancies yet, we feel quite confident and in control with it so far, i’ll post an update with some screen shots which lots of friends have asked to see. ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.th/products/138792875-fertility-tracker-and-digital-ovulation-tracker-hormone-free-and-over](https://www.desertcart.co.th/products/138792875-fertility-tracker-and-digital-ovulation-tracker-hormone-free-and-over) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-09-24*