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Latest
News
8 min read
5 Best Smart Rings for Women in 2026
April 27, 2026
News
8 min read
WHOOP vs Circular Ring 2: Which is Right for You?
April 20, 2026
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5 Best Smart Rings for Women in 2026
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Sleep
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News
2 min read
The Circular Ring 2 Kickstarter Campaign Is Live – A New Era for Personalized Health
March 14, 2025
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How to Use Your HSA or FSA to Purchase the Circular Ring
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Discover the New Coherence Breathing Circle in the Circular Ring
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Expert
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NBA Star Clint Capela Joins the Circular Tribe
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Activity
3 min read
Rested Heart Rate (RHR): What Increases and Decreases it ?
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How to use Heart Rate Variability (HRV)
August 23, 2019
Activity
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What increases and decreases Heart Rate Variability (HRV)?
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Activity
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Continuous Heart Rate monitor
August 11, 2019
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6 / 7
Sleep
2 min read
Beat Sleep Inertia and Wake Up Alert: How Circular's Smart Alarm and Wake-Up Score Revolutionize Mornings
March 8, 2024
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Stress Levels Tracking: Your Path to Inner Peace
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Sleep
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What is the Circular® Sleep quality score and how it is calculated
August 20, 2023
Sleep
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What is the Circular® Wake up score and how it is calculated
August 3, 2023
Sleep
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Circular® smart snooze: Embrace Circular's Smart Snooze Feature for Energized Mornings
August 1, 2023
Sleep
3 min
Unveiling Sleep Secrets: Decoding Your Heart Rate Trend During Sleep with Circular Ring
July 28, 2023
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News
8 min read
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Circular Ring 2 Release Notes (Jan 2026): Database Optimization, Server Performance Upgrade, and 2025 Year in Review
January 31, 2026
News
3 min read
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January 10, 2026
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Circular Ring 2 Release Notes (Sep 2025): Dedicated Sync Architecture, Faster Data Transfer & Sleep Tracking Improvements
September 30, 2025
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