Get the latest news!

Thank you! Your submission has been received!

Oops! Something went wrong while submitting the form

Want better Health? Get engaged with your sleep
Improve your sleep like never before thanks to sophisticated tracking, easy-to-read insights and a seamless smart ring.

A sleep lab in a tiny and comfy ring

Precise PPG heart rate, respiratory rate, SpO2 and motion sensors along with a machine learning powered app will help you understand and improve your sleep over the long term. 

Kira never sleeps but you'll sleep better

Kira learns about your baselines to give you a daily personalized sleep quality and tells you exactly what parameters impact your sleep to improve them. Circular measures not only how long you sleep, but the time spent in each stage , your circadian rhythm, your heart rate metrics and respiratory rate.

Critical to your health and your energy

Sleep is the period to repair, regenerate and prepare your mind and body for performance. Understand & improve your sleep to give yourself the sleep you deserve and reach your best performance level.

A sleep lab in a tiny and comfy ring

Precise PPG heart rate, respiratory rate, SpO2, temperature and motion sensors along with a machine learning powered app will help you understand and improve your sleep over the long term.

Meet the 3 pillars of sleep

Quality

Learn how much time you spend in each sleep stage: Light, Deep, REM & Awake. Deep sleep enables physical recovery while REM sleep helps with memory, thinking and creativity. Do you know how much time you spend in each ? Is it optimal ? Kira will help you improve and optimize these.

Duration

Circular looks at how much you have actually slept compared to your personal sleeping length needs. Circular also calculates the duration of disturbances during your sleep, and gives you a score on how efficiently you slept.

Circadian Rhythm

Science shows that sleep must follow a light/darkness cycle, be in line with your natural chronotype and that the more consistent you are with your sleep schedule, the better sleep you'll get. Kira makes recommendations that match up with your chronotype to achieve higher consistency.

The most advanced wearable tracking device

The most advanced wearable tracking device

The most advanced wearable tracking device

What you are missing out on with a non efficient sleep
How much do you actually know about your sleep?
How much sleep should you get?
Your duration of real sleep?
The duration of your sleep cycle?
Your number of sleep cycle?
What is your optimal sleep schedule?
Your rem sleep duration?
How to lower your time to fall asleep?
Do you have sleep inertia, sleep apnea?
What is the effect of your current sleep on your energy?
Biohack your way to better sleep
Make the most of your day by improving your sleep journey


1. Track your sleep each night and trends over time.

2. Understand your sleep and learn about the parameters that impact your sleep quality and how it correlates with your days.

3. Build better habits for better rest.

4. Wake up with energy with a silent & smart alarm clock.
A good waking experience for a good start of the day
Waking up in a light sleep stage helps to limit sleep inertia. If you are tired of waking up in a bad mood but would rather wake up with energy then Circular will help you.

Smart, noninvasive and silent at the same time. Circular can study your sleep and smoothly wake you up during the light sleep stage, without disturbing your surroundings thanks to silent vibrations.
I WANT TO BE MORE