BBT tracking that doesn't care when you wake up.

Tempdrop measures your temperature while you sleep. No alarm. No invalid readings.

BBT tracking that doesn't care when you wake up.

Tempdrop measures your temperature while you sleep. No alarm. No invalid readings.

Here's why traditional BBT fails most women.

Your schedule isn't the problem. The method is.

The Shift Worker

You rotate between days and nights. Oral BBT requires the exact same wake time every morning — a time that doesn't exist in your life.

The New Parent

Your toddler had you up at 4am. Now your chart is full of open circles instead of data you can actually trust.

The Traveler

Every time zone change throws your chart off. You spend the rest of the cycle second-guessing every reading.

Here's why traditional BBT fails most women.

Your schedule isn't the problem. The method is.

The Shift Worker

You rotate between days and nights. Oral BBT requires the exact same wake time every morning — a time that doesn't exist in your life.

The New Parent

Your toddler had you up at 4am. Now your chart is full of open circles instead of data you can actually trust.

The Traveler

Every time zone change throws your chart off. You spend the rest of the cycle second-guessing every reading.

How Tempdrop works

Three steps.

No thermometer. No alarm.


1

Put it on and turn it on before bed

Slip the lightweight armband on your upper arm, turn it on, and go to sleep. Takes about five seconds.

2

Sleep normally

Any bedtime. Any wake time. Tempdrop collects data overnight and filters out the noise automatically.

3

Sync and see your temp

Open the app when you're ready. Your filtered BBT is waiting — no adjustments, no mental math needed.

How Tempdrop works

Three steps.

No thermometer. No alarm.


1

Put it on and turn it on before bed

Slip the lightweight armband on your upper arm, turn it on, and go to sleep. Takes about five seconds.

2

Sleep normally

Any bedtime. Any wake time. Tempdrop collects data overnight and filters out the noise automatically.

3

Sync and see your temp

Open the app when you're ready. Your filtered BBT is waiting — no adjustments, no mental math needed.

98.6% ovulation detection accuracy

In a peer-reviewed clinical study , Tempdrop detected ovulation with 98.6% accuracy — compared to 93% for wrist-based wearables.

Source: Published clinical study, Tempdrop vs. wrist-worn devices, peer-reviewed.

98.6% ovulation detection accuracy

In a peer-reviewed clinical study , Tempdrop detected ovulation with 98.6% accuracy — compared to 93% for wrist-based wearables.

Source: Published clinical study, Tempdrop vs. wrist-worn devices, peer-reviewed.

The simple way to track your fertility

All-in-one solution

All-in-one solution

Tempdrop’s wearable sensor and accompanying charting app brings the full fertility charting solution to your smartphone.

Easy to use

Easy to use

Wear the Tempdrop sensor on your upper arm during sleep and sync to our charting app whenever it's convenient.

Backed by science

Backed by science

Tempdrop uses the latest scientific knowledge to bring you an accurate method of cycle tracking and identification of your fertile window.

Sleep in, no problem

Sleep in, no problem

Tempdrop‘s sensor continuously monitors your basal body temperature while you sleep, eliminating the need to wake up at the same time each day.

Not sure yet?

Find out if Tempdrop fits your life — in 60 seconds.


Your schedule, your sleep, your goals — answer a few quick questions and we'll show you exactly how Tempdrop works for your situation.

Not sure yet?

Find out if Tempdrop fits your life — in 60 seconds.


Your schedule, your sleep, your goals — answer a few quick questions and we'll show you exactly how Tempdrop works for your situation.

Real Results, Real Stories

2,800  Verified Customer Reviews

After reading the detailed guide, I felt confident in my purchase. The step-by-step instructions were so helpful, and the results are exactly as descr...show more

Rachel M.

The educational content really sold me on this product. Understanding how it works made me trust it more, and now after 3 weeks of use, I'm seeing the...show more

David K.

I love how they explain everything in detail. From the ingredients to the application process - it's all laid out clearly. And most importantly, the p...show more

Sarah L.

The before and after timeline they provided was spot-on. Followed the instructions exactly as shown in their guide, and by week 3, I could see signifi...show more

Michael P.

What impressed me most was how well they explained the science behind the product. It wasn't just marketing fluff - the results backed up everything t...show more

Emma T.

The detailed instructions made it so easy to get started. Their educational content answered all my questions before I even had to ask. Great product,...show more

James R.

I was skeptical at first, but their thorough explanation of how the product works convinced me to try it. So glad I did - the results are amazing and ...show more

Lisa C.

The educational content really sets this product apart. Understanding the science behind it made me more committed to the process, and the results spe...show more

Mark S.

Following their detailed guide made all the difference. The results started showing exactly when they said they would. This product is the real deal!

Jennifer B.

Their transparency about the process and timeline is refreshing. The product works exactly as described in their educational content. No surprises, ju...show more

Tom H.

How Tempdrop compares

An honest look at three popular BBT tracking methods.

Tempdrop

Oral BBT

Other Wearables

Fixed wake time required?

No

Yes

Yes / No (add-on)

Works with irregular sleep?

Yes — built for it

No

Limited

FAM-compatible?

Yes — exports to most FAM apps

Yes

No — closed system

One-time cost?

Yes — no subscription needed

Yes — ~$15 thermometer

No — $100+/year subscription

REAL QUESTIONS, REAL ANSWERS

The things you're actually wondering.


In your words — not softened brand language.

REAL QUESTIONS, REAL ANSWERS

The things you're actually wondering.

In your words — not softened brand language.

Not sure yet?

Find out if Tempdrop fits your life — in 60 seconds.


Your schedule, your sleep, your goals — answer a few quick questions and we'll show you exactly how Tempdrop works for your situation.

Not sure yet?

Find out if Tempdrop fits your life — in 60 seconds.


Your schedule, your sleep, your goals — answer a few quick questions and we'll show you exactly how Tempdrop works for your situation.