Basal Body Ring: Generation 1

$349.00

Tax included.

Only worn at night
Helps to understand ovulation cycles and fertility windows
Cycle insights for PCOS, Endometriosis and irregular cycles

Size

1

2

3

4

5

Size Guide

Femtek	AUS/UK	US
1	H 1/2 - J 1/2	4 - 5
2	L - M	5 1/2 - 6 1/2
3	O - Q	7 - 8
4	Q 3/4 - S 3/4	8 1/2 - 9 1/2
5	T 1/2 - V 1/2	10 - 11

Available Worldwide
Free Shipping
Women Led
Australian Owned
Secure Data

What is it

Australia’s first smart ring created by women for women, specifically designed for accurate cycle tracking

What does it do

It eliminates the guesswork from cycle tracking by providing precise, accurate and valuable tracking insights for women who are trying to conceive, managing menstrual health problems, birth control without hormones and general cycle awareness.

What does it track

It effortlessly tracks your vital metrics. With continual monitoring of your Basal Body Temperature, Heart Rate, and Heart Rate Variability while you sleep. Our advanced sensors capture accurate data throughout the night, providing you with invaluable insights into your body’s rhythms

Cycle Sync

Worn discreetly overnight, the BBRing syncs with our revolutionary Cycle Tracking app each morning. This powerful combination empowers you to fuel, train, and heal your body according to your cycle. Whether you’re trying to conceive, training with your cycle, tracking body literacy, or monitoring breastfeeding, the BBRing has got you covered.

Advanced Technology

Our patent-pending temperature sensor configuration ensures your temperature readings are accurate to the nearest .01°C/F. The BBRing’s sensors collect up to 15,000 overnight measurements, filtering out disruptions like overnight feeds or bathroom breaks for unparalleled accuracy.

Future Proofed

While the inbuilt SP02 feature is dormant in our first release, future updates will unlock this functionality. Rest assured, there’s no need to upgrade to the next version of the ring; simply update your app to access new features and enhancements.

What’s Included in Your Box:

Basal Body Ring
Charger Base and Cable

The smart wearable you barely need to wear

As worn by

Benefits

Fertility Awareness

Helps you understand your ovulation cycles and fertility windows

Convenience

Only worn at night with unobtrusive methods of collecting data

Personalised Insights

Tailored insights and suggestions based on individual temperature patterns helping you to identify irregularities in your cycle, crucial for understanding overall reproductive health

Cycle Regulation

By tracking your cycles, you may be able to identify lifestyle factors that affect your menstrual health, helping you to make positive changes

Tech Stack

Biometric Sensors

High grade sensors with accurate tracking capabilities to capture over 30,000 data measurements

Movement Detection

Filters out night time disturbances

HR/HRV Sensors

To understand your stress physiology

Light Leakage Sensor Protection

To protect your melatonin overnight

Default Low EMF Mode

To ensure your sleep quality isn’t impacted

Built exclusively by women for women to encompass every woman's life stage

made with materials that are BPA and PFA free and built to last

Created and backed by women with 30+ years in women’s research and science

Can be used with Irregular cycles, Endometriosis, PCOS, PMDD and Infertility

starts collecting data automatically when it’s on your finger and stops when it’s taken off

Finger point accuracy for resting heart rate, heart rate variability and basal body temperature

Built exclusively by women for women to encompass every woman's life stage
Can be used with Irregular cycles, Endometriosis, PCOS, PMDD and Infertility
made with materials that are BPA and PFA free and built to last
starts collecting data automatically when it’s on your finger and stops when it’s taken off
Created and backed by women with 30+ years in women’s research and science
Finger point accuracy for resting heart rate, heart rate variability and basal body temperature

What She's saying

★★★★★
I was TTC looking for something easier than using a thermometer and then I found Kyri. So easy to wear at night and I don’t have to stress about not knowing my fertile window!

- HS
★★★★★
I had been looking for a smart ring to see what was going on with my fertility as I was having lots of issues and needed to understand my body better. I was so happy to find something that is specific to my needs.

- KB
★★★★★
I’ve truely loved the BBRING from the moment I’ve gotten it. I was fortunate enough to be #99 from the kickstarter campaign and have been on the journey from day one.

- AG
★★★★★
The ring is fabulous, the communication is incredible, and I’m hoping to utilise it through my next post partum period whilst breastfeeding as well to fully utilise all components. I’m incredibly grateful to have found such a great company and product. Thank you ❤️

- AG
★★★★★
I lead such a busy life - somewhat chaotic and often overwhelming, that the ease of the BBRing allows me to confidently monitor a very important aspect of my health that I wouldn’t monitor otherwise. I have been having blood sugar management issues over the last 5-6 months, and through tracking my cycle with the BBRing, I learned that my insulin resistance was worse during certain phases of my cycle.

- ZK

How we stack up

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Accuracy
Women Specific

FAQ

You got questions, we got answers

Place your BBRing on your index finger and go to sleep. It’s that easy! Overnight, the BBRing collects over 30,000 measurements of your key biomarkers. It filters out the measurements that are disrupted and when you wake – all of your data is in the Femtek Cycle Tracker app. You don’t have to second guess ovulation or your period with our technology.
Not with the BBRing! Because our device is designed to collect data overnight/when you sleep; so when you wear the device during the day it will skew your data and give you incorrect cycle information. There is a lot of ways you can utilise the app during the day which will work with the data the BBRing collects at night, and we also work with Apple and Android Health Kits for some data.
Our only requirement for wearing the device is that you have to be asleep for a minimum of 4 hours so we can collect enough temperature measurements to give you an accurate results. If you are not able to wear the device for 4 hours, we will still be able to provide you with a HRV and HR measurement.
Depending on what kind of a shift worker you are (full night shift, or starting your shift in the night) you would either wear your device during your morning sleep when you finish, or up until you wake up for your night shift start. As long as you’re sleeping!
Currently if your device is off the charger, it is collecting data. The battery life is roughly 2-3 days, but for proper usage please leave your device on the charger with the cable in a plug that is turned on, in between wears.
We wish we could have designed a universal size or that it was as simple as everyone having the same size fingers! That said, our unique design allows for 3 sizes in one due to our split in the side of the device, which also accommodates to overnight finger swelling.
We are all about sustainability, and unfortunately sending sizing kits to our users does not work with our own ethics surrounding the excess waste we create on this earth. But never fear, we have an even better solution! To find your ring size, check out our ring size info here
If you don’t have a ring that you can use for finding your size, we recommend heading over to a jeweller the next time you’re in a mall and having them quickly size your index finger!
The BBRing does not replace an oral temperature for Fertility Awareness Methods. To list a device as appropriate for use with FAM, these devices must be built to a certain quality management standard, and require CE, FDA, or TGA approval. This translates to clinical trials, evidence of efficacy, and safety data; all of which we are working toward, and we hope to be able to offer in the future.
However, our unique and patent pending temperature configuration ensures that we are collecting the most accurate temperature from a distal site.
If you are using oral temperatures for strict avoidance of pregnancy, then no wearable can replace an oral temperature and cervical mucus observations.

Place your BBRing on your index finger and go to sleep. It’s that easy! Overnight, the BBRing collects over 30,000 measurements of your key biomarkers. It filters out the measurements that are disrupted and when you wake – all of your data is in the Femtek Cycle Tracker app. You don’t have to second guess ovulation or your period with our technology.
Our only requirement for wearing the device is that you have to be asleep for a minimum of 4 hours so we can collect enough temperature measurements to give you an accurate results. If you are not able to wear the device for 4 hours, we will still be able to provide you with a HRV and HR measurement.
Depending on what kind of a shift worker you are (full night shift, or starting your shift in the night) you would either wear your device during your morning sleep when you finish, or up until you wake up for your night shift start. As long as you’re sleeping!
We wish we could have designed a universal size or that it was as simple as everyone having the same size fingers! That said, our unique design allows for 3 sizes in one due to our split in the side of the device, which also accommodates to overnight finger swelling.
We are all about sustainability, and unfortunately sending sizing kits to our users does not work with our own ethics surrounding the excess waste we create on this earth. But never fear, we have an even better solution! To find your ring size, check out our ring size info here
If you don’t have a ring that you can use for finding your size, we recommend heading over to a jeweller the next time you’re in a mall and having them quickly size your index finger!

Not with the BBRing! Because our device is designed to collect data overnight/when you sleep; so when you wear the device during the day it will skew your data and give you incorrect cycle information. There is a lot of ways you can utilise the app during the day which will work with the data the BBRing collects at night, and we also work with Apple and Android Health Kits for some data.
Currently if your device is off the charger, it is collecting data. The battery life is roughly 2-3 days, but for proper usage please leave your device on the charger with the cable in a plug that is turned on, in between wears.
The BBRing does not replace an oral temperature for Fertility Awareness Methods. To list a device as appropriate for use with FAM, these devices must be built to a certain quality management standard, and require CE, FDA, or TGA approval. This translates to clinical trials, evidence of efficacy, and safety data; all of which we are working toward, and we hope to be able to offer in the future.
However, our unique and patent pending temperature configuration ensures that we are collecting the most accurate temperature from a distal site.
If you are using oral temperatures for strict avoidance of pregnancy, then no wearable can replace an oral temperature and cervical mucus observations.

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