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Track your Basal Body Temperature (BBT) accurately and easily with the Tempdrop wearable monitor.
S/M fits 8.5"-15.5"/21.5cm - 39cm
L/XL fits 12.5"-18.5" /31.5cm- 47cm.
Each band uses hook-and-eye fasteners, so it adjusts within its size range, and comes with an extender for additional flexibility if needed.
Please measure your arm before ordering your Tempdrop fertility tracker. See Size Chart above for measurements.
Fertility and ovulation tracking that finally fits your life.
Traditional basal body temperature tracking works - but it comes with rules. Wake up at exactly the same time every day, take your temperature before you move, speak or even think about getting out of bed. Every single day. Miss a day and your data is compromised. It’s accurate, but it’s exhausting.
Tempdrop removes all of that.
Why does BBT tracking matter?
Your basal body temperature shifts subtly throughout your cycle, rising after ovulation and dropping before your period. Tracked consistently, these tiny changes reveal your fertile window, confirm ovulation, and give you a real, data-backed picture of your hormonal health - something no app that just counts days can do.
BBT tracking is one of the most effective natural methods for understanding your cycle, whether you’re trying to conceive, avoiding pregnancy naturally or simply want to know your body better.
A smarter way to track...
Tempdrop is a small, comfortable wearable you put on before bed and forget about. While you sleep, it continuously monitors your temperature - then syncs everything to your app by morning.
No alarms. No rigid routines. No data lost before life got in the way.
Built on proven scientific methods, Tempdrop delivers the accuracy of traditional BBT tracking - without any of the restrictions. Its smart algorithm learns your unique patterns over time, filtering out sleep disturbances and adapting to irregular schedules, so your readings stay accurate even when your sleep isn’t perfect.
Delivery
Returns
View the shipping policy here.
View the returns policy here.
Please note: Orders shipped to Ireland femme will pay the customs charges.
Upgrade to the Tempdrop × The IVFN bundle before you check out
Tempdrop tracks your basal body temperature overnight, giving you reliable, personalised insights into ovulation, fertility, and your cycle, without hassle.
Tempdrop is for every woman; including those with unpredictable cycles, and irregular sleep patterns. The app will give you insights into both your sleep and cycle patterns.
Sync your data to the companion app for easy charting, cycle tracking, and clear fertility insights, all-in-one place on your smartphone.

Understand your fertility and cycle with the Tempdrop wearable monitor.
Tempdrop’s app turns your nightly temperature data into simple, useful cycle insights.
See your full cycle at a glance.
Tailored to your unique body.
Know when you’ve ovulated.
Get insights on your quality of sleep.
Track more than just temperature.
98.6% accuracy in clinical trials.
The core app is completely free and gives you everything you need to track and understand your cycle. However, if you want to go deeper, the premium app unlocks additional features for just £4/month - entirely optional.
Tempdrop’s app turns your nightly temperature data into simple, useful cycle insights.
See your full cycle at a glance.
Tailored to your unique body.
Know when you’ve ovulated.
Get insights on your quality of sleep.
Track more than just temperature.
98.6% accuracy in clinical trials.
The core app is completely free and gives you everything you need to track and understand your cycle. However, if you want to go deeper, the premium app unlocks additional features for just £4/month - entirely optional.
of users recorded a detectable temperature shift on at least 80% of cycle days.
Average users cycle time to conception. Based on regular cycles, tracking a minimum of 60% of the cycle.
Pregnancies reported by Tempdrop users
Tempdrop helps you understand your cycle more clearly, whether you're trying to conceive, managing irregular cycles, or navigating hormonal changes.
Pinpoint your fertile window with more confidence.
Tempdrop tracks your overnight temperature patterns to help you identify ovulation and understand your fertile window. With consistent cycle insights, you can feel more informed and confident when planning for pregnancy.
Spot patterns and understand what your body is doing.
Track your overnight temperature trends to better understand your cycle patterns and feel more in tune with your body.
Navigate hormonal changes with clearer insight.
Tempdrop can help you monitor cycle changes over time, giving you more visibility as your hormones shift.
BBT TRACKING OPTIONS
Not all temperature trackers work the same way. Here's why placement, and purpose, make all the difference.
|
Recommended
Option 1 Tempdrop |
Option 2 Basic Basal Thermometer |
Option 3 Finger & Wrist Wearables | |
|---|---|---|---|
| Temperature & placement | |||
| Accuracy | |||
| Daily Effort | |||
| Built for irregular cycles, PCOS & shift work | |||
| Cost | |||
| Best for |
Accurate, stress-free tracking - irregular cycles, PCOS, busy lifestyles |
Strict routines & tight budgets |
General wellness, not fertility tracking |
Chat with our team. Available from 9am - 5pm, Monday - Friday.
Learn more about our team, values, and approach.