Tempdrop Fertility, Cycle & Ovulation Tracker | Wearable Basal Body Temperature Monitor

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Tempdrop Fertility, Cycle & Ovulation Tracker | Wearable Basal Body Temperature Monitor

£179.00

£179.00 ~~£199.00~~

Tax included. Shipping calculated at checkout.

Track your Basal Body Temperature (BBT) accurately and easily with the Tempdrop wearable monitor.

Finally understand your cycle - identify ovulation and your fertile window
Accurate data, captured while you sleep - no early wake-ups
Works for every cycle - irregular, unpredictable, or shift work

Everything in one app - charts, insights, and cycle tracking

Size: Small/Medium

Small/Medium Large/XL

Please measure your arm before ordering your Tempdrop fertility tracker. See Size Chart above for measurements.

Description

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.

Build 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.

Loved by over 100,000 women, and especially by those with irregular cycles, PMOS (PCOS), disrupted sleep or shift work - because it works around your life, not against it.

How it works

Tempdrop takes the most effective method of fertility tracking and makes it effortless. Here’s how:

Step 1 - Wear it to bed. Slip the Tempdrop sensor into the armband and wear it on your upper arm before you go to sleep. That’s it. No setup, no alarms, nothing to remember in the morning.

Step 2 - It tracks while you sleep. Thoughout the night, Tempdrop collects thousands of temperature and movement data points from your body. Its smart algorithm filters out any distrubances - restless nights, late wake-ups, shift work - to calculate one accurate, reliable basal body temperature reading.

Step 3 - Sync in the morning. When you wake up, remove the sensor and open the Tempdrop app. A quick Bluetooth sync sends your overnight data straight to your smartphone - available on iOS and Android.

Step 4 - Understand your cycle. Your temperature is automatically added to your chart, building a clearer picture of your cycle over time. Log additional symptoms, track your fertile window and get personalised insights - all in one place.

The result? Accurate BBT tracking without the 6am alarms, rigid routines, or missed readings. Just consistent, meaningful data that helps you understand your body better every single day.

Deliveries & Returns

Delivery

All orders are processed within 2 business days
Free standard delivery on orders over £40
Orders to Ireland are shipped via UPS and typically arrive within 3–5 working days - please note customs charges may apply

Returns

As Tempdrop is classified as a medical device, it cannot be returned or exchanged once opened - please check sizing carefully before placing your order
Unopened items can be returned within 30 days of purchase with valid proof of purchase
To initiate a return, email talktous@femmehealth.co.uk with your order number and reason for return

View the shipping policy here.

View the returns policy here.

Please note: Orders shipped to Ireland femme will pay the customs charges.

The easy way to track your fertility

No alarms required

Tempdrop tracks your basal body temperature overnight, giving you reliable, personalised insights into ovulation, fertility, and your cycle, without hassle.

Personalised to your body

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.

All-in-one fertility tracking app

Sync your data to the companion app for easy charting, cycle tracking, and clear fertility insights, all-in-one place on your smartphone.

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How Tempdrop Works

Understand your fertility and cycle with the Tempdrop wearable monitor.

Wear it to bed - Pop on the armband and press the button on the sensor to turn it on
Tracks while you sleep - Smart algorithm filters out disturbances to give you an accurate reading
Sync in the morning - Quick Bluetooth sync to the app
Understand your cycle - Your chart updates automatically, with personalised insights

The Tempdrop App

Track your cycle with ease with the Tempdrop's app.

More than just tracking - Tempdrop's app provides the tools and insights you need to better understand your body and cycle.

Cycle Tracking

Personalised Fertility Insights*

Ovulation Confirmation

Sleep Quality Analysis*

Multiple Symptom Tracking

Accurate Fertility Predictions

*Premium app features.

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.

Results You Can Trust

94%

of users recorded a detectable temperature shift on at least 80% of cycle days.

2.1

Average users cycle time to conception. Based on regular cycles, tracking a minimum of 60% of the cycle.

20k

Reported pregnancies by Tempdrop since launch

Support For Every Cycle

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.

Trying To Conceive

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.

BBT Tracking options

Find the right tracker for your life

Not all temperature trackers work the same way. Here's why placement, and purpose, make all the difference.

	Recommended Option 1 Tempdrop Wearable Upper arm sensor worn overnight while you sleep	× Option 2 Basic Basal Thermometer Manual oral reading taken each morning	× Option 3 Finger & Wrist Wearables Smart rings & wrist-worn health trackers
How it works
Temperature type	Core auxiliary BBT True basal body temperature	Oral temp Skewed by environment	Surface skin temp Skewed by environment
Accuracy	Highest accuracy + algorithm filtering	Accurate only with perfect routine	Variable - environment dependent
Sensor placement	Inner upper arm Protected = stable, consistent reading	Under the tongue Sensitive to timing & movement	Finger or wrist Exposed to room temp & circulation
Practicalities
Daily effort	✓ Wear overnight, sync when ready	× Same wake time daily required	~ Passive - but not fertility optimised
Works with irregular sleep	✓ Yes - algorithm filters disturbances	× Disturbed sleep skews results	~ Partially - not calibrated for BBT
Ideal for PCOS & Shift work	✓ Yes - built for unpredictable cycles	× No	× Not designed for fertility
Purpose-built for fertility and hormone tracking	✓ Yes - ovulation tracking & insights	~ Basic BBT only - no smart insights	× General wellness - not fertility-validated
Investment
Cost	£179 Purpose built - 2 months free premium app access included	~£20 Thermometer only	£200-£500 Plus ongoing subscription - not fertility focused
Best for	Anyone wanting accurate, stress-free fertility tracking - especially with irregular cycles, PCOS, disrupted sleep, or a busy lifestyle.	Very consistent routines & tight budgets - requires strict morning scheduling	General sleep & health tracking - not a standalone fertility tool

Recommended

Option 1

Tempdrop Wearable

Upper arm sensor worn overnight while you sleep

How it works

Temperature type

Core auxiliary BBT

True basal body temperature

Accuracy

Highest accuracy + algorithm filtering

Sensor placement

Inner upper arm

Protected = stable, consistent reading

Practicalities

Daily effort

✓

Wear overnight, sync when ready

Works with irregular sleep

✓

Yes - algorithm filters disturbances

Ideal for PCOS & Shift work

✓

Yes - built for unpredictable cycles

Purpose-built for fertility and hormone tracking

✓

Yes - ovulation tracking & insights

Investment

Cost

£179

Purpose built - 2 months free premium app access included

Best for

Anyone wanting accurate, stress-free fertility tracking - especially with irregular cycles, PCOS, disrupted sleep, or a busy lifestyle.

Option 2

Basic Basal Thermometer

Manual oral reading taken each morning

How it works

Temperature type

Oral temp

Skewed by environment

Accuracy

Accurate only with perfect routine

Sensor placement

Under the tongue

Sensitive to timing & movement

Practicalities

Daily effort

Same wake time daily required

Works with irregular sleep

Disturbed sleep skews results

Ideal for PCOS & Shift work

Purpose-built for fertility and hormone tracking

Basic BBT only - no smart insights

Investment

Cost

~£20

Thermometer only

Best for

Very consistent routines & tight budgets - requires strict morning scheduling

Option 3

Finger & Wrist Wearables

Smart rings & wrist-worn health trackers

How it works

Temperature type

Surface skin temp

Skewed by environment

Accuracy

Variable - environment dependent

Sensor placement

Finger or wrist

Exposed to room temp & circulation

Practicalities

Daily effort

Passive - but not fertility optimised

Works with irregular sleep

Partially - not calibrated for BBT

Ideal for PCOS & Shift work

Not designed for fertility

Purpose-built for fertility and hormone tracking

General wellness - not fertility-validated

Investment

Cost

£200-£500

Plus ongoing subscription - not fertility focused

Best for

General sleep & health tracking - not a standalone fertility tool

Why placement matters: Finger and wrist devices read surface temperature - easily skewed by room termperature, bedding and circulation. Temprdrop's inner upper arm placement captures a protected, stable core temperature: the gold standard for accurate BBT tracking.

Kate

The Cheshire Acupuncturist

"Sometimes, the answers aren’t in the 'average' cycle data. They’re in the details you uncover when you track consistently, and with the right tools."

Dr. Meagan Breining

Naturopathic Doctor

“I want to be able to share Tempdrop with anyone who is willing to listen! I believe fertility awareness is highly under-utilized & I love how Tempdrop's team wants to increase education about FAM's.”

Megan Maitland

Women’s Health Expert

“Tempdrop cuts through all the inaccuracies that can go along with basal body temperature tracking, and I love that it can be used by women who don’t have regular sleep schedules or have irregular periods.”

Dr. Alicia Thompson

Obstetrician gynecologist

“I'm passionate about Tempdrop and eager to see how far it can go to help women learn about their bodies.”

Tarina Mosley

Certified Fertility Awareness Educator

“I love this product. I purchased one of the original Tempdrops and have been obsessed ever since. I highly recommend Tempdrop to my clients.”

Dr. Mona Wiggins

Doctor of Nursing Practice, FAM Educator & Cycle Coach

“When I came across an easier answer to monitoring BBT I was mesmerized.”

Does it matter what time I wake up or how long I sleep?

Not at all - this is one of the things that makes Tempdrop different. Traditional BBT tracking requires you to wake up at exactly the same time every day, but Tempdrop's algorithm accounts for variations in your sleep duration and wake time. Whether you had a restless night, a lie-in, or an early start, your data remains accurate and reliable.

The only requirement is that the sensor is worn for a minimum of 3 hours, with at least 2 hours of sleep detected during that time - and those 2 hours don't need to be consecutive. So even if your sleep is broken or interrupted, Tempdrop can still give you a valid reading.

I have irregular cycles, will Tempdrop work for me?

Absolutely - Tempdrop is designed to support all cycles, including irregular ones.

Tracking fertility with an irregular cycle can feel overwhelming, but Tempdrop takes the stress out of it by continuously monitoring your basal body temperature while you sleep and adapting to your unique patterns over time.

While the app won't estimate future ovulation dates for irregular cycles, it still tracks and interprets your temperature data to confirm when ovulation has taken place.

You can also log cervical mucus observations in the app alongside your temperature data - a really useful addition for irregular cycles, as it can indicate when an ovulation attempt is near and give you additional fertile window insights.

So while your cycle might be unpredictable, Tempdrop helps you understand what's happening in your body every step of the way.

I am trying to conceive, how can Tempdrop help me?

Timing is everything when it comes to conception - and properly timed intercourse can triple your likelihood of conceiving naturally. That's where Tempdrop comes in.

By consistently tracking your basal body temperature overnight, Tempdrop helps you identify your fertile window and pinpoint the days with the highest chance of success. No guesswork, no counting days - just accurate, personalised data from your own body.

And because Tempdrop removes all the stress from daily temperature tracking, you can focus on what actually matters - without your fertility journey taking over your life.

Is Tempdrop safe?

Completely - Tempdrop is designed with your safety in mind from the ground up.

The sensor only transmits a Bluetooth signal twice: in the first 30 seconds when turned on, and when you manually initiate syncing after waking up. Syncing takes less than 30 seconds, and no wireless signal is transmitted at all while you're sleeping. The Bluetooth 4.0 signal it uses is extremely low energy - approximately 1,000 times less than a standard mobile phone call.

While wearing it overnight, Tempdrop runs purely on a standard coin cell watch battery with no wireless connections active.

It's made from medical grade materials, including a stainless steel sensor, and holds CE certification. Please note the stainless steel may contain trace amounts of nickel, so if you have a known nickel sensitivity it's worth bearing that in mind.

What is Tempdrop?

Tempdrop is a smart wearable thermometer and charting app combo that brings an all-in-one fertility monitor to your smartphone.

The Tempdrop sensor is worn on the upper arm during sleep to accurately derive a core nightly sleeping body temperature for the purposes of ovulation tracking. Tempdrop is uniquely able to arrive at an accurate body temperature thanks to a combination of advanced sensors and sophisticated algorithms. Combine temperatures with other fertility symptom tracking within the app to pinpoint ovulation each cycle. Our charting app has a free version option or you can choose to upgrade to our premium features to take advantage of automatic cycle interpretation and fertility insights. As a bonus, our premium option allows you to track your sleep data as well.

If you’re, trying to conceive, charting to know your body, or practicing fertility awareness long-term, the Tempdrop fertility monitor is designed to take the stress out of ovulation tracking. For those that are postpartum, have irregular cycles, work shifts, are a light sleeper, or love to sleep-in, Tempdrop delivers accurate cycle tracking data that is tailored to you.

How does Tempdrop work?

Tempdrop is a smart wearable thermometer and charting app for fertility tracking.

The Tempdrop sensor is worn under your upper arm using the Tempdrop armband during sleep. Each night, it collects thousands of data points on your body temperature and sleep motion. We derive your single nightly sleeping temperature from the data using advanced algorithms.

After removing the device, initiate a sync using the Tempdrop sensor and fertility app ( Apple Store, Google Play) and Tempdrop will sync your sleeping temperature using Bluetooth Low-Energy (BLE) to your smartphone. You can track additional fertility symptoms in the charting feature for a complete solution.

The Tempdrop wearable fertility tracker will replace the traditional method of BBT temping so you can stop losing sleep and take the stress out of cycle charting. Click here to learn more.

Will I have to pay an ongoing subscription?

Tempdrop is unique because it's a wearable fertility monitor that gives you freedom and options to suit your specific needs.

The Tempdrop fertility app has both free and premium versions.

Free version

Sync your sensor to receive temp results
List of temperatures
Chart view
Multiple symptom tracking
Manual chart interpretation (set a cover line, temperature shift count, and peak day)
Data backup with robust data protection
Cycle history and status
Chart export and share

Premium Version

Sync your sensor to receive temp results
List of temperatures
Multiple symptom tracking
Manual chart interpretation (set a cover line, temperature shift count, and peak day)
Data backup with robust data protection
Cycle history and status
Chart export and share
Sleep data
Fertility insights
Automatic interpretation of temps and cervical mucus
Interactive fertility course
Calendar feature

How is Tempdrop different from other basal thermometers?

As opposed to taking a manual waking temp, Tempdrop offers continuous monitoring, filtering out waking times to give you a true nightly sleeping temperature. The smart algorithm learns your unique nightly and monthly patterns to filter variables that can otherwise skew temp results. Worn high up in the inside of the upper arm, the wearable fertility monitor captures an axillary reading making it more accurate than surface skin temperature.

The accompanying charting fertility app encourages tracking multiple fertility signs to better guide you in understanding your cycle and fertile window. If you already have a favourite fertility app, you can freely use it with your Tempdrop data. The choice is yours!

Can I start using Tempdrop whilst on birth control?

Yes. You can start using the Tempdrop ovulation tracker device straight away, even if you are using another form of birth control, such as hormonal birth control.

Tempdrop is not dependant on your cycle status. However, the sooner you start wearing Tempdrop, the sooner it can get through the 'learning phase' (Tempdrop learns your sleep and environmental patterns). This will enable you to catch your first ovulation post hormonal birth control (HBC) or postpartum (PP), whatever your personal circumstances are.

Which smartphones can I use with Tempdrop?

Tempdrop is compatible with a wide range of smartphones. Simply visit your app store and search for the Tempdrop app. If you can download it, you're good to go!

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Tempdrop Fertility, Cycle & Ovulation Tracker | Wearable Basal Body Temperature Monitor