--- product_id: 308592775 title: "Fertility and Ovulation Tracker – Wearable Basal Body Temperature (BBT) Monitoring Sensor and Fertility Charting App (Large - 11-19.7 inches)" brand: "tempdrop" price: "12799647₫" currency: VND in_stock: true reviews_count: 5 category: "Tempdrop" url: https://www.desertcart.vn/products/308592775-fertility-and-ovulation-tracker-wearable-basal-body-temperature-bbt-monitoring store_origin: VN region: Vietnam --- # Continuous overnight BBT monitoring Seamless app sync & multi-app compatibility Long-lasting replaceable battery Fertility and Ovulation Tracker – Wearable Basal Body Temperature (BBT) Monitoring Sensor and Fertility Charting App (Large - 11-19.7 inches) **Brand:** tempdrop **Price:** 12799647₫ **Availability:** ✅ In Stock ## Summary > 🌙 Track your cycle, not your alarm clock—fertility made effortless. ## Quick Answers - **What is this?** Fertility and Ovulation Tracker – Wearable Basal Body Temperature (BBT) Monitoring Sensor and Fertility Charting App (Large - 11-19.7 inches) by tempdrop - **How much does it cost?** 12799647₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/308592775-fertility-and-ovulation-tracker-wearable-basal-body-temperature-bbt-monitoring) ## Best For - tempdrop enthusiasts ## Why This Product - Trusted tempdrop brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Custom Fit Comfort:** Available in large and standard sizes for a secure, comfortable all-night wear. - • **Data Freedom & Integration:** Sync with Tempdrop’s app or export to your favorite fertility apps for ultimate control. - • **Sleep-In Friendly Tracking:** No more early alarms—track your basal body temperature effortlessly overnight. - • **Smart Temperature Algorithms:** Patented Active Temperature-Noise Cancellation ensures precise fertility window detection. - • **HSA/FSA Eligible & Warranty Backed:** Invest in your fertility health with confidence—1-year warranty included. ## Overview Tempdrop is a wearable basal body temperature sensor paired with a smart fertility charting app, designed to monitor overnight temperature continuously for accurate ovulation and fertility tracking. Its patented algorithms filter out sleep disturbances and external factors, making it ideal for women with irregular cycles or varied sleep patterns. The device offers customizable sizing, easy syncing, and compatibility with multiple fertility apps, providing a non-invasive, convenient, and data-flexible solution for natural family planning or conception support. ## Description EASY FERTILITY OVULATION TRACKER Tempdrop is a smart wearable sensor and accompanying charting app that helps women effortlessly track key fertility indicators to avoid pregnancy or increase chances to conceive. Thanks to our proprietary patented algorithms, Tempdrop will learn and pinpoint your nightly and monthly sleeping temperature patterns for the highest accuracy, helping you identify your fertility window and ovulation each cycle. Making Fertility Tracking Accessible to All Women Tempdrop makes ovulation tracking accessible to all women and offers accurate and easy digital cycle charting. The Tempdrop sensor continuously monitors sleep and temperature overnight, delivering the results you need no matter your sleep habits. Women can track their cycle confidently, even if they have irregular cycles, wake up throughout the night to breastfeed or work night shifts. It filters out variables such as poor sleep, alcohol, and travel, helping you reliably confirm ovulation and fertility. Tempdrop is HSA and FSA eligible. Tempdrop is a convenient and non-invasive alternative to oral or inal basal body thermometers. It is affordable when compared to wearables that measure parameters secondary to temperature. FEATURES ✔️ Easy to Use – Just wear on your arm while you sleep and sync when it’s convenient ✔️ Integrates with Tempdrop charting app and allows the freedom to use any other favorite fertility apps ✔️ Smart Technology: The Tempdrop sensor combines two algorithms, a learning algorithm, and our patented Active Temperature-Noise Cancellation (ATNC) filtering algorithm ✔️ 1-Year Warranty Choose your size: The standard armband is 5.2 to 14 inches and the large armband is 11-19.7 inches. To find out your size requirement, measure around the widest section of your bicep. Review: I’ve been using Tempdrop for a while now, and there are definitely things I love about it. It does a great job helping me estimate when my ovulation window is approaching and when my period is likely to start. For general cycle awareness, it’s super helpful and convenient. However, there are a couple of downsides worth mentioning. Tempdrop usually doesn’t confirm ovulation until 2–3 days after it actually happens, and my temperature readings aren’t always consistenly the same ovulation temp as the previous month. Because of that delay, I wouldn’t recommend relying on Tempdrop alone if you’re trying to avoid pregnancy. The confirmation comes too late to use it as your only form of fertility awareness birth control. Overall, it’s a great tool for understanding your cycle patterns, but not the best choice if you need real-time ovulation confirmation. Review: I purchased this to help find when I am ovulating easier, and make it a lot easier to take my morning temperature on the days I either forget or I move around to much before taking my temperature and then I do not get a true reading. So far it works very well; however, the temperature is always lower than my Smart Basal Thermometer. I am not sure if where it sits on your under arm will always be cooler than under your tongue or if there is something wrong; but it has always been lower than my Smart Basal Thermometer for the past two to three months now. The arm band is comfortable however you do have to get use to it at first. But ones you are use to it then it is comfortable. The syncing is easy and really it does not take that long to sync. The app is easy to use as well; however, I wish there were more things to keep track of in the app. Furthermore, I wish it also synced with Apple Health too, and the graphs it puts out, I wish they were a little better than they are now. But all-and-all; it is still pretty good and I would purchase it again if I did not have one. ## Features - ALL-IN-ONE OVULATION TRACKING ✔️ Tempdrop’s wearable sensor and accompanying charting app brings the full fertility charting solution to your smartphone. Whether you are looking to increase your chances of conceiving or want to avoid pregnancy naturally, Tempdrop is for you. - SLEEP IN, NO PROBLEM ✔️ Basal body temperature (BBT) is a major fertility indicator that allows women to understand their cycle. The Tempdrop sensor continuously monitors while you sleep, eliminating the need to wake up at the same time each day to catch a BBT reading. No more alarm clocks and no more hassle – sleep in! - EASY TO USE ✔️ Wear the Tempdrop sensor on your upper arm during sleep and then sync whenever it's convenient. With an inexpensive, replaceable battery, there is no daily charging. Available in 2 Sizes: The standard armband is 5.2 to 14 inches and the large armband is 11-19.7 inches. To find out your size requirement, measure around the widest section of your bicep. - COMPLETE DATA FREEDOM ✔️ Option to view and track your fertility signs in Tempdrop’s accompanying app (iOS and Google Play), or input your data into other fertility apps. Use the inbuilt charting features to track multiple fertility signs and identify your cycle phases. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07VL6C8P4 | | ASIN | B07VL6C8P4 | | Age Range Description | Adult | | Best Sellers Rank | #156,202 in Health ( See Top 100 in Health ) #169 in Health Care Thermometers #313 in Family Planning & Birth Control Products | | Brand | TEMPDROP | | Customer Reviews | 3.8 3.8 out of 5 stars (220) | | Customer reviews | 3.8 3.8 out of 5 stars (220) | | Date First Available | 29 January 2020 | | Department | Women | | Format | digital | | Is Discontinued By Manufacturer | No | | Item model number | TD-18Q2-L | | Manufacturer | TEMPDROP | | Package Dimensions | 12.8 x 8.99 x 4.7 cm; 141 g | | Units | 1.0 Count | ## Product Details - **Age range (description):** Adult - **Brand:** TEMPDROP - **Colour:** Cream White, Touches of Pink - **Included components:** Battery - **Special features:** Alarm, High Accuracy ## Images ![Fertility and Ovulation Tracker – Wearable Basal Body Temperature (BBT) Monitoring Sensor and Fertility Charting App (Large - 11-19.7 inches) - Image 1](https://m.media-amazon.com/images/I/71NCtq-GaoL.jpg) ## Questions & Answers **Q: Does this come with a warranty?** A: Hello! We will honor a 1-year manufacturer's warranty with all Amazon purchases. If you experience an issue, please contact us at support@temp-drop.com for troubleshooting. If we determine the issue is due to a manufacturing defect, we will exchange it and cover shipping provided it falls inside the warranty window. **Q: Anyone getting low temp readings? I am getting 95/96 whichs below my norm readings of 98+..** A: Hi there. Tempdrop can read in a different range to traditional thermometers but please email support@temp-drop.com so that we can run a review for you to ensure your sensor is working correctly. Thanks! **Q: Do you have to sync every day or can you go a few days without?** A: It holds your sleep data for 3 days I believe but I always sync it the next morning to keep my charts accurate **Q: Where on your arm do you wear the band? Can you wear it on your wrist like a watch?** A: No. The band is worn around your upper arm with the monitor on your inner arm, close to your armpit. It will not determine temperatures correctly if worn on your wrist. ## Customer Reviews ### ⭐⭐⭐ Review *by K***K on 9 November 2025* I’ve been using Tempdrop for a while now, and there are definitely things I love about it. It does a great job helping me estimate when my ovulation window is approaching and when my period is likely to start. For general cycle awareness, it’s super helpful and convenient. However, there are a couple of downsides worth mentioning. Tempdrop usually doesn’t confirm ovulation until 2–3 days after it actually happens, and my temperature readings aren’t always consistenly the same ovulation temp as the previous month. Because of that delay, I wouldn’t recommend relying on Tempdrop alone if you’re trying to avoid pregnancy. The confirmation comes too late to use it as your only form of fertility awareness birth control. Overall, it’s a great tool for understanding your cycle patterns, but not the best choice if you need real-time ovulation confirmation. ### ⭐⭐⭐⭐⭐ Review *by J***Y on 14 December 2022* I purchased this to help find when I am ovulating easier, and make it a lot easier to take my morning temperature on the days I either forget or I move around to much before taking my temperature and then I do not get a true reading. So far it works very well; however, the temperature is always lower than my Smart Basal Thermometer. I am not sure if where it sits on your under arm will always be cooler than under your tongue or if there is something wrong; but it has always been lower than my Smart Basal Thermometer for the past two to three months now. The arm band is comfortable however you do have to get use to it at first. But ones you are use to it then it is comfortable. The syncing is easy and really it does not take that long to sync. The app is easy to use as well; however, I wish there were more things to keep track of in the app. Furthermore, I wish it also synced with Apple Health too, and the graphs it puts out, I wish they were a little better than they are now. But all-and-all; it is still pretty good and I would purchase it again if I did not have one. ### ⭐⭐⭐⭐ Review *by T***A on 10 January 2024* Tempdrop was great for tracking temperature and cycle; however the sensor must be extremely delicate. It only survived about two years and died after a simple careful battery change. I only wear it half the month, so don't expect longevity for this product if you wear it daily. Warranty is just a year but they offer extended warranty for another year if you purchase it. They did offer me discount but I am still disappointed it's not better made. ## Frequently Bought Together - Tempdrop Fertility and Ovulation Tracker –Wearable Basal Body Temperature (BBT) Monitoring Sensor and Fertility Charting App Includes Comfortable Armband (L/XL - 12.5-18.5 Inches) - Easy@Home 50 Ovulation Test Strips and 20 Pregnancy Test Strips Combo Kit, (50 LH + 20 HCG)-Package May Vary - Pre-Seed Fertility Lubricant, For Use by Couples Trying to Conceive --- ## 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.vn/products/308592775-fertility-and-ovulation-tracker-wearable-basal-body-temperature-bbt-monitoring](https://www.desertcart.vn/products/308592775-fertility-and-ovulation-tracker-wearable-basal-body-temperature-bbt-monitoring) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-22*