Circular

2.8
420 reviews
5K+
Downloads
Content rating
Everyone
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About this app

Circular is the world’s most complete health improvement platform, offering 13+ features to help you optimize your wellness. Paired with the Circular Ring, the Circular app provides deep insights into your sleep, recovery, stress, heart health, energy levels, activity, and much more, making it easy to understand and improve your health over time. Through the Circular ring, track your biosignals, 24/7. With the Circular app, unleash the full potential of data.

FEATURES

Each feature is called a Circle, allowing you to personalize your health journey. Activate or customize Circles anytime in the "Manage My Circles" section.

-Sleep Monitoring – Get a detailed sleep quality score with contributors and trends to optimize your rest.
-Energy Score – Understand your daily readiness and recovery with biometric-based scoring.
-Heart Rhythm Monitoring – Track your heart rhythm with real-time insights and detect irregularities.
-Stress Tracking – See how your body responds to daily challenges and learn to manage stress effectively.
-Coherence Training – Use guided breathing exercises with real-time biometric tracking to enhance focus and relaxation.
-Women's Health Tracking – Monitor your cycle and hormonal changes for a better understanding of your body.
-Activity & Sport Sessions – Track workouts, daily movement, and exertion levels to optimize performance.
-Live Measurements – Take spot-check readings of your vitals, and activity data.
-Vital Alerts – Get notified when your biosignal levels exceed your set thresholds.
-Smart Alarm Clock – Wake up at the optimal moment in your sleep cycle.
-Medication Reminders – Setup your medication routine and stay on track with alerts for scheduled doses.
-Personal Diary & Calendar – Add notes and track trends in your health data.
-Challenges & Gamification – Earn Circular Coins, streaks, and badges while improving your health.


PERSONAL AI HEALTH COACH – KIRA

Kira is your AI-driven wellness assistant, helping you interpret your data and make better health decisions with:

✔ Automatic day & night cross-data correlation
✔ Personalized, science-backed recommendations
✔ Event validation & insights based on your lifestyle

ADVANCED ANALYTICS & CALIBRATION

🔬 Machine learning-powered scoring – Circular cross-analyzes your health metrics to generate detailed, data-driven wellness scores.

📊 14-Day Calibration – Kira learns your unique patterns by collecting baseline data, setting reference values, and adjusting recommendations to fit your profile.
ADDITIONAL TOOLS

✅ Airplane Mode – Disable data transmission for privacy and extended battery life.
✅ Timer – Set custom vibration alerts.

COMPATIBILITY & SUPPORT

🔹 Circular Ring required – The app works exclusively with a Circular Ring.
🔹 Bluetooth required – Background Bluetooth usage may reduce battery life.

📌 Important: Circular is not a medical device and does not provide medical diagnoses. For any health concerns, consult a doctor.

📩 Need help? Visit https://www.circular.xyz/help or email support@circular.xyz.

💍Need Ring? Visit https://www.circular.xyz/

📚 Learn more: https://www.circular.xyz/learn.
Updated on
Oct 1, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info, Health and fitness and 5 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

2.8
409 reviews
Naomi Braker
September 6, 2025
Just got circular 2, absolute garbage. The app crashes when I try to sync, so it's just absolutely useless. I've had a number of problems and no response from customer service for weeks. Stay away from this company! The ring is giving completely wrong info, my heart monitor gives me one beat and then a flat line, the live readings for SPO2 jump from 40-90%, and it isn't recording my steps. Then, the sync issue started and the app just crashes every time I open it.
42 people found this review helpful
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dana vonkickass
October 8, 2025
terrible app. crashes every time it attempts to sync. Data is incorrect, sleep is wildly off, as are steps. The heart rhythm is useless. If the ring cost 100 dollars, this might be acceptable, but for as much as I paid, I should have just gone for a better brand. Additionally, all email to the company is unanswered. Save your money, this app (and product) are awful.
3 people found this review helpful
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Circularing
October 15, 2025
Hi, we’re sorry for the issues you’re experiencing. If the app crashes around 60–80% during sync, please go to My Ring → Factory Reset; this will resolve the issue. For other problems, they were caused by recent server issues, which are mostly resolved now, and we’re continuously working to improve the app experience. Thank you for your patience.
S Madden
October 13, 2025
Great idea, trash execution. I bought my ring in July 2022, didn't receive it until August 2023 and it's been nothing but problems ever since. It worked okay for the first 3-ish months, but then it started losing functionality: no connection, no syncing, no recording various data, vibration function gone, button stopped working. I was supposed to have a replacement ring sent to me, but they backed out of that, tried to get me to buy another. Spent $250 for spotty use at best
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Circularing
October 15, 2025
Hi, we’re sorry to hear about your experience with the previous ring. Indeed, it sounds like the issues you mention are related to that older model. Our current CR2 ring and app have addressed many of these problems, and we’re continuously improving both to provide a more reliable and consistent experience.