Comparison

Circular Ring vs Evie Ring

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Circular Ring

This platform offers comprehensive health tracking and improvement tools. It provides deep insights into sleep, recovery, stress, heart health, and activity, with personalized recommendations from an AI coach to help users understand and optimize their wellness.

Highlights
  • Sleep Monitoring
  • Energy Score
  • Heart Rhythm Monitoring
  • Stress Tracking
  • Coherence Training
  • AI Health Coach (Kira)
Features
Read full description

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.

About

Evie Ring

This app offers a comprehensive approach to women's wellness, empowering users to track their menstrual cycle, analyze sleep quality, and monitor daily activity. It provides personalized insights to help users understand their bodies and take control of their health journey.

Highlights
  • Menstrual cycle tracking
  • Sleep quality analysis
  • Activity tracking
  • Workout logging
  • SpO2 monitoring
  • Heart rate monitoring
Read full description

Say "hello" to a new dawn for women's wellness. Evie is on a mission to bring you a trusted and personalized whole wellness solution that gives you the power to take control of your unique journey. Menstrual Cycle Track your period and menstrual symptoms to better understand yourself. Sleep Quality Identify ways to get a more restful sleep with detailed analysis of your sleep cycles and overnight wellness vitals. Activity Tracking Get a comprehensive understanding of your activity levels throughout the day with workout logs and continuous activity tracking. ** Tested against and accurate to International Standard IEC 80601-2-61 for peripheral blood oxygen levels (SpO2) and heart rate during spot check. ** In addition to using the App, seek a doctor's advice before making any medical decisions.

Screenshots

Circular Ring4 screens
Evie Ring4 screens

Verdict

The call

The clearest difference is rating: Circular Ring at 2.8 against Evie Ring's 1.4. Circular Ring also leads on ratings volume (511 vs 28) and review sentiment (16% vs 7%). On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Circular Ring holds the better App Store score, 2.8 against 1.4. That said, the two scores are not equally well evidenced: Circular Ring has 511 ratings behind it against 28, so its average is the more settled of the two. Written reviews point the same way: 16% of Circular Ring's written reviews are positive against 7% of Evie Ring's.

UpkeepUpdate frequency

Circular Ring ships an update every 2 weeks, Evie Ring every 3 weeks. The most recent releases landed on October 25, 2026 and October 21, 2026 respectively.

Scorecard3 real differences · 7 level
Circular Ring versus Evie Ring: the parameters behind the verdict, then further details
ParameterCircular RingEvie Ring
PriceFreeFree
Rating2.8 (511 ratings) — better1.4 (28 ratings)
Positive reviews16.0% of reviews — better6.6% of reviews
Number of ratings511 — better28
Update frequencyEvery 2 weeks — betterEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhoneiPhone
Requires iOS16.616.0 — better
Further details — not scored
Size193 MB154 MB
Age rating4+17+
DeveloperCircularMovano Inc

Customer experience

Circular Ring

All ratings501 ratings
Positive41.1%
Neutral5.4%
Negative53.5%
Written reviews507 reviews
Positive16.0%
Neutral6.9%
Negative77.1%

Evie Ring

All ratings15 ratings
Positive0.0%
Neutral6.7%
Negative93.3%
Written reviews76 reviews
Positive6.6%
Neutral13.2%
Negative80.3%

Bugs and requests

Circular Ring

Not enough reviews yet to summarise bugs or requests.

Evie Ring

Reported bugs

18 issues
  • Ring won't sync with app
  • Battery dies within 3-6 months of use
  • App crashes frequently
  • Sleep data not recorded on some nights
  • Spot check feature fails consistently
Show 13 more
  • Ring disconnects randomly from phone
  • Data loss after app updates
  • Bluetooth pairing failures
  • Heart rate sensor stops working
  • Ring only connects when on charger
  • Step count shows 99,000+ steps in single day
  • Sleep timing off by hours
  • Counts steps while sedentary
  • App won't update or update breaks functionality
  • Ring won't pair after factory reset
  • Temperature readings inaccurate
  • Data syncing delays
  • Metrics not tracking after updates

Requested features

18 requests
  • Apple Health integration
  • Manual sleep and activity logging/editing
  • Automatic workout detection
  • Advanced cycle tracking with temperature insights
  • Pregnancy tracking mode
Show 13 more
  • Intimacy tracking
  • Custom mood and symptom options
  • Real-time temperature data for ovulation tracking
  • Notifications for health changes (heart rate, temperature)
  • Nap tracking capability
  • Spot check reliability improvements
  • Data retention beyond 2 weeks
  • Detailed analytics and health correlations
  • Workout app integration
  • Temperature graph visualization
  • More than three goal options
  • Wireless charging case
  • Symptom logging buttons like Apple Health

In-app purchases

None

Circular Ring

No in-app purchases

None

Evie Ring

No in-app purchases

Questions

Is Circular Ring free?
Circular Ring is free to download, with no in-app purchases.
Is Evie Ring free?
Evie Ring is free to download, with no in-app purchases.
Which has better reviews, Circular Ring or Evie Ring?
Circular Ring is rated higher. Circular Ring averages 2.8 out of 5 from 511 ratings, while Evie Ring averages 1.4 from 28 ratings.
Do Circular Ring or Evie Ring have ads?
Neither Circular Ring nor Evie Ring shows ads.
Which is updated more often, Circular Ring or Evie Ring?
Circular Ring ships an update every 2 weeks, and Evie Ring every 3 weeks. Most recently, Circular Ring was updated on October 25, 2026 and Evie Ring on October 21, 2026.

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