Tempdrop is the first of its kind - a personalized user-specific thermometer that learns minute temperature variations, correlated with hormonal fluctuations throughout the ovulatory cycle (e.g. Estrogen, Progesterone), thus identifying recurring temperature patterns up to 5 days before ovulation.
This app is communicating with your Tempdrop sensor via Bluetooth 4.0 and sends the data for analysis on our cloud algorithm server. Your characteristic sleeping temperature will be displayed shortly after.

Disclaimer: The Tempdrop sensor and app are intended as complementary instruments to enhance your ability to monitor your fertility and share health details. The app and its wearable sensor, in themselves, are not, nor are they intended to be, a fertility monitor, a substitute for contraception, or a birth control method. We recognize the need of some to use the data and information provided to support ongoing health and menstrual cycle tracking, however, it is important to note that this should NOT be used as a substitute for an in-presence qualified professional, medical analysis, advice, guidance, or treatment. We strongly advise seeking a qualified Fertility Awareness instructor or other self-teaching resources to learn a symptothermal method and support your fertility journey.
The provided interpretations and prediction guidelines are not suitable for use with irregular cycles. Optimal performance is dependent on correct and consistent use. Individual usage, wearing, input, and circumstances can affect the data. The user is fully responsible for the individual data inputs.
The Tempdrop Sensor is approved for use in the USA, and is registered in the FDA database under registration number 3016099071. The device is classified as "Device, Fertility Diagnostic, Proceptive”

What’s New

Version 3.1.0

- Sleep analysis
- Various bug fixes

Ratings and Reviews

4.5 out of 5
426 Ratings

426 Ratings

AutBRevs ,

Love it

I LOVE my Tempdrop. I use a symptothermal method for charting and without my tempdrop I would not be able to accurately temp being postpartum and breastfeeding and cosleeping. My temps are so much more accurate and a smoother chart overall. The TD app works really well also, no bugs or anything. They’re constantly trying to improve it so that it fits charting needs. Right now I only use it for syncing and pulling data but looking forward to the next update when they have irregular cycle and manual interpretation features available.

Ontulu ,

5/5 for the TD device, 4/5 for the app

After recently getting married, I decided to come off the HBC that I had been on for the last 15 years to prepare my body to get pregnant. I was diagnosed with PCOS early on in my youth and didn’t know what to expect from my body. My sister, who had been a FAM user for years, bought me a TempDrop as a wedding gift and after the first night of using it, I was hooked.

I’ve only ever had one issue with the device which was a glitch, I think. Tech support was right there waiting to assist but the glitch corrected itself and I had no further issues and didn’t need tech support. The device itself takes a little getting used to as you do sleep with it on your arm but I never had an issue sleeping comfortably with it.

The app itself I give 4/5 stars. I love the aesthetic of other apps and the TempDrop app just isn’t there, yet. The TempDrop team is working hard to take user advice and make changes and I’m excited for the new updates rolling out soon. I would like to see more options (custom data, CM, cervix position, etc) but navigation and selections are pretty good so far. I have faith that they’re hearing the user community and will continue to roll out new features the users have on their wishlists.

Emster4798 ,


I use a symptothermal method of birth control, and while using a glass thermometer is helpful for sussing out underlying issues, it does NOT help in confirming ovulation! Enter the tempdrop. The app and armband are so easy to use (once you figure out how to best wear it — the first few days/weeks are trial and error), I feel so much relief knowing I can always fall back on the tempdrop temps to make decisions about my health and fertility. I’ve had a few issues where the app wouldn’t sync, claiming I didn’t get enough hours of data when I know I did, but the customer care team has always been responsive, thorough, and genuinely helpful. I consider tempdrop and its companion app to be absolutely essential to anyone using an FABM.

App Privacy

The developer, Tempdrop LTD., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Location
  • Contact Info
  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

You Might Also Like