7 Best AI Smart Rings for Sleep Monitoring in 2025 – Top Picks

Getting good sleep matters more than ever. You need the right tools to track your sleep patterns and improve your rest quality. Smart rings offer a comfortable way to monitor your sleep without wearing bulky devices on your wrist.

These tiny devices pack powerful sensors that track your heart rate, body temperature, blood oxygen levels, and sleep stages. The best part? You barely notice them while sleeping. This makes them perfect for people who find smartwatches uncomfortable at night.

The market has exploded with options in 2025. You can choose from rings with AI-powered insights, sleep apnea detection, and personalized recommendations. Some work without subscriptions while others offer premium features through monthly plans.

Key Takeaways

Advanced Sleep Analysis: Modern smart rings track all sleep stages including REM, deep sleep, light sleep, and wake periods. They measure sleep quality through multiple biometric signals like heart rate variability and skin temperature.

Comfortable All-Night Wear: Smart rings weigh between 2-6 grams, making them significantly lighter than smartwatches. The titanium and ceramic designs resist scratches and maintain comfort throughout the night.

Battery Life Varies Widely: You can expect 4 to 12 days of battery life depending on the model. Some rings charge in under an hour while others need 2-3 hours for a full charge.

Subscription Requirements Differ: Several top brands like Oura require monthly subscriptions for full features, while others like Ultrahuman and RingConn offer lifetime access without ongoing fees.

AI-Powered Health Insights: The latest 2025 models use artificial intelligence to provide personalized sleep coaching, predict illness, detect irregular heart patterns, and even identify sleep apnea with over 90% accuracy.

Oura Ring Generation 4

The Oura Ring Gen 4 stands as the gold standard for sleep tracking smart rings. This fourth generation device brings major improvements over its predecessor with recessed sensors and Smart Sensing technology.

Sleep Tracking Excellence: The ring captures detailed data about your sleep cycles throughout the night. It monitors your time in light sleep, deep sleep, REM sleep, and periods of wakefulness. The sensors track your heart rate variability, respiratory rate, and skin temperature to paint a complete picture of your sleep quality.

You receive a Sleep Score each morning that summarizes your rest. This score considers factors like total sleep time, sleep efficiency, restfulness, and sleep timing. The ring also tracks your circadian rhythm alignment and provides insights about your ideal bedtime.

The Gen 4 features improved sensor accuracy thanks to its new titanium coating and recessed sensor design. These changes reduce signal interference and provide more consistent readings. Many users report the Gen 4 matches their sleep patterns more accurately than previous versions.

Smart Features: The Oura app delivers personalized guidance based on your sleep data. It suggests optimal workout times, recommends rest days, and alerts you when you need recovery. The Daytime Stress feature shows how daily activities impact your nervous system.

Women can track menstrual cycles and pregnancy with dedicated features. The ring predicts period start dates and identifies cycle phases based on temperature patterns. It even detects early pregnancy signals before traditional tests.

The battery lasts 7 days on a single charge. The included charging dock makes topping up simple and quick. You need about 90 minutes for a full charge.

Pricing: The Oura Ring Gen 4 starts at $399 for the standard finishes. Premium finishes in gold and rose gold cost $499. Keep in mind you need a $5.99 monthly subscription after the first month to access all features.

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Pros:
✓ Most accurate sleep tracking available
✓ Comprehensive health insights with AI analysis
✓ Excellent app with personalized recommendations
✓ Durable titanium construction
✓ Wide size range from 4 to 15

Cons:
✗ Requires monthly subscription for full features
✗ Higher upfront cost than competitors
✗ Takes 1-2 weeks to establish baseline data

Samsung Galaxy Ring

Samsung entered the smart ring market with a strong contender designed specifically for Android users. The Galaxy Ring integrates seamlessly with Samsung Health and Galaxy smartphones to deliver powerful sleep insights.

Advanced Sleep Monitoring: This ring tracks your sleep stages with impressive accuracy using multiple sensors. It measures your heart rate, blood oxygen saturation, and skin temperature throughout the night. The data syncs automatically to Samsung Health when you wake up.

The Sleep Score feature evaluates your rest quality based on duration, efficiency, and sleep stage distribution. You can view detailed graphs showing when you entered different sleep phases. The ring also monitors your sleep consistency by comparing patterns across multiple nights.

Samsung added Snore Detection as a unique feature. The ring works with your phone’s microphone to identify snoring patterns and intensity. This helps you understand factors that might disrupt your sleep quality.

The Energy Score combines sleep data with activity and heart rate variability to show your readiness for the day. This metric helps you decide whether to push hard or take things easy. AI algorithms provide personalized insights about improving your scores.

Fitness Integration: Beyond sleep, the ring tracks steps, calories, and workout intensity. It automatically detects exercises and logs them in Samsung Health. The heart rate monitoring continues 24/7 to catch irregularities.

Women get Cycle Tracking features that use temperature data to predict periods and fertile windows. The ring learns your patterns over time to improve prediction accuracy.

Battery life reaches 7 days with typical use. The compact charging case provides portable power and protects your ring. A full charge takes about 80 minutes.

Compatibility Note: The Galaxy Ring works best with Samsung Galaxy phones running Android 11 or higher. Limited features function with other Android devices and iPhones.

The ring costs $399.99 with no subscription required. You get lifetime access to all Samsung Health features at no extra cost.

Pros:
✓ No subscription fees required
✓ Excellent integration with Samsung ecosystem
✓ Snore detection feature
✓ Double pinch gesture controls
✓ IP68 water resistance rating

Cons:
✗ Limited compatibility outside Samsung devices
✗ Fewer health metrics than Oura
✗ Smaller size range available

RingConn Gen 2

RingConn made waves by creating the first smart ring with built-in sleep apnea monitoring. This second generation device packs medical-grade features at a competitive price point.

Sleep Apnea Detection: The standout feature tracks breathing disruptions throughout the night. The ring measures blood oxygen drops and respiratory disturbances to calculate an Apnea-Hypopnea Index (AHI). This medical metric shows the severity of sleep apnea.

Internal testing shows over 90% accuracy for detecting obstructive sleep apnea compared to clinical sleep studies. You get real-time AHI data and personalized insights through the dedicated sleep apnea module in the app.

This matters because millions of people have undiagnosed sleep apnea. The condition increases risks of heart disease, stroke, and diabetes. Early detection through the RingConn can prompt you to seek medical treatment.

Comprehensive Sleep Tracking: Beyond apnea detection, the ring monitors all standard sleep metrics. It tracks sleep stages, heart rate variability, respiratory rate, and skin temperature. The sleep quality score helps you understand your rest patterns.

The ring provides Sleep Insights that explain what affects your sleep. You learn how factors like exercise timing, alcohol consumption, and stress impact your rest quality. The app suggests specific improvements based on your data.

Extended Battery Life: RingConn delivers an impressive 12 days of battery life. This outlasts most competitors by several days. The unique charging case doubles as a power bank and holds multiple charges.

You can check your battery status in the app. A full charge takes about 90 minutes. The long battery life makes the ring ideal for travel without worrying about daily charging.

No Subscription Model: Unlike Oura, RingConn offers all features without monthly fees. You pay once and access everything forever. This saves hundreds of dollars over several years of ownership.

The ring works with both iOS and Android devices. The app syncs data automatically via Bluetooth. You can view trends and export data for health records.

The RingConn Gen 2 costs $299 for the standard model. The Gen 2 Air version with a thinner profile costs $199 but lacks sleep apnea detection.

Pros:
✓ Sleep apnea monitoring included
✓ 12-day battery life
✓ No subscription required
✓ Medical-grade accuracy
✓ Affordable pricing

Cons:
✗ Thicker design than some competitors
✗ App interface needs polish
✗ Limited size availability

Ultrahuman Ring Air

The Ultrahuman Ring Air lives up to its name as one of the lightest smart rings available. This Indian startup created a device that balances advanced features with comfortable wear.

Ultra-Light Design: Weighing just 2.4 to 3.6 grams depending on size, the Ring Air feels almost weightless on your finger. The slim profile measures only 2.45mm thick. This makes it comfortable enough to forget you’re wearing it during sleep.

The titanium construction resists scratches and damage from daily wear. The ring handles water submersion up to 100 meters, letting you wear it while swimming or showering.

Sleep Tracking Capabilities: The Ring Air excels at monitoring your circadian rhythm. It tracks your natural sleep-wake cycle and shows when your body wants to sleep versus when you actually rest. This helps you align your schedule with your biology.

The Sleep Index combines multiple metrics into a single score from 0 to 100. Higher scores indicate better quality rest. The app breaks down contributors like sleep debt, movement during sleep, and heart rate variability.

Temperature monitoring stands out as particularly accurate. The ring detects variations as small as 0.01 degrees Celsius. This precision helps identify fever patterns, ovulation signs, and optimal recovery states.

Unique Features: Ultrahuman offers several innovative tools beyond basic sleep tracking. The Caffeine Window shows optimal times to consume coffee based on your sleep patterns. You learn when caffeine will help versus hurt your rest.

The Movement Index encourages light activity throughout the day. The ring tracks your sedentary periods and suggests short walks. Research shows breaking up sitting time improves metabolic health and sleep quality.

Women get detailed Menstrual Cycle Insights powered by temperature data. The ring predicts periods up to 30 days ahead and identifies different phases. It suggests workout intensity based on your cycle phase.

Battery Performance: Expect 5 to 6 days between charges with typical use. The compact charging dock makes powering up easy. A full charge takes about 90 minutes.

The Ultrahuman Ring Air costs $349 with no subscription required. All features stay free forever, making it a better long-term value than subscription-based options.

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Pros:
✓ Extremely lightweight and comfortable
✓ Lifetime free features
✓ Excellent temperature accuracy
✓ Circadian rhythm tracking
✓ Metabolic insights included

Cons:
✗ Shorter battery life than competitors
✗ Limited third-party app integration
✗ Scratch-prone finish

Amazfit Helio Ring

Amazfit brought their smartwatch expertise to the ring category with the Helio. This affordable option delivers solid sleep tracking without premium pricing or subscriptions.

Sleep Quality Analysis: The Helio Ring monitors your sleep stages including light, deep, and REM phases. It tracks total sleep duration and calculates sleep efficiency. The ring measures breathing quality throughout the night using respiratory rate sensors.

Heart rate monitoring continues while you sleep to detect irregularities. The ring calculates Heart Rate Variability (HRV) as a key recovery metric. Higher HRV generally indicates better recovery and readiness for activity.

The Sleep Score combines these metrics into an easy-to-understand rating. You can view weekly and monthly trends to spot patterns. The Zepp app (Amazfit’s health platform) provides basic recommendations for improving sleep.

Health Tracking Features: Beyond sleep, the Helio tracks daily activity including steps, distance, and calories. It monitors your stress levels using HRV analysis. The EDA sensor detects electrodermal activity that indicates stress responses.

The ring measures blood oxygen saturation both during sleep and throughout the day. This helps identify potential breathing issues or altitude effects. Continuous monitoring provides more data than spot checks.

Battery and Charging: The Helio delivers about 4 days of battery life with regular use. This falls shorter than premium options but remains acceptable for most users. The charging cradle powers the ring fully in about 90 minutes.

Affordability: The Amazfit Helio Ring costs just $199.99 with no subscription fees. This makes it the most affordable option from a major brand. You get lifetime access to all Zepp app features included.

The ring works with both iOS 14+ and Android 7.0+ devices. The Zepp app syncs data automatically when your phone connects via Bluetooth.

Pros:
✓ Most affordable major brand option
✓ No subscription required
✓ EDA stress sensor included
✓ Zepp app integration
✓ Decent accuracy for the price

Cons:
✗ Shorter battery life (4 days)
✗ Limited sleep insights compared to premium options
✗ Less comfortable than lighter rings
✗ Basic app interface

Circular Ring 2

The Circular Ring 2 arrives as a feature-packed challenger with some unique capabilities. This French company designed a ring that prioritizes health monitoring and recovery tracking.

Advanced Sleep Monitoring: The Circular Ring 2 analyzes your sleep across multiple dimensions. It tracks sleep stages with detailed breakdowns of light, deep, and REM sleep. The ring measures your Sleep Efficiency by comparing time asleep versus time in bed.

The unique Kira AI Coach provides personalized sleep recommendations. This AI assistant learns your patterns and suggests specific improvements. It might recommend adjusting your bedtime, changing room temperature, or modifying evening routines.

Circadian Rhythm Analysis helps you understand your natural body clock. The ring tracks when you feel most alert versus drowsy throughout the day. This data helps optimize your schedule for peak performance.

Health Features: The ring includes ECG monitoring capability, a rare feature in smart rings. You can take electrocardiogram readings to detect atrial fibrillation and other heart rhythm issues. Medical-grade accuracy makes this valuable for health monitoring.

Blood oxygen tracking runs continuously during sleep and activity. The ring alerts you to significant drops that might indicate breathing problems. Respiratory rate monitoring complements this data.

The Alarm Clock feature uses gentle vibrations to wake you during light sleep phases. This makes waking feel more natural and less jarring. You set a time window and the ring chooses the optimal moment.

Battery Duration: The Circular Ring 2 lasts 8 days on a single charge with typical use. The magnetic charging dock makes powering simple. A full charge requires about 2 hours.

The ring costs $349 with no subscription fees. All features remain accessible forever at no additional cost.

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Pros:
✓ ECG monitoring included
✓ AI-powered coaching
✓ Smart alarm with vibration
✓ Good battery life (8 days)
✓ No subscription required

Cons:
✗ Material scratches easily
✗ Limited size range
✗ Newer brand with less proven track record
✗ App can feel overwhelming with data

Evie Ring

The Evie Ring targets women specifically with features designed around female health needs. This ring combines sleep tracking with comprehensive menstrual cycle monitoring.

Women-Focused Sleep Tracking: The Evie Ring monitors how your menstrual cycle affects sleep quality. It tracks changes in body temperature that correlate with different cycle phases. You see how sleep patterns vary throughout the month.

The ring measures sleep stages and provides quality scores like other devices. However, it adds context about hormonal influences on rest. You learn whether poor sleep stems from stress, activity, or cycle-related factors.

Menstrual Health Features: Temperature tracking enables accurate Period Prediction up to 30 days ahead. The ring identifies ovulation timing through temperature shifts. This helps with family planning or understanding your body better.

The app tracks symptoms including mood, energy, cramps, and more. You can correlate these symptoms with sleep quality and activity levels. Pattern recognition helps you anticipate challenging days.

Pregnancy Support features emerge once you conceive. The ring continues monitoring temperature and rest patterns. It provides insights specific to pregnancy sleep challenges.

Sleep Insights: The Evie app delivers straightforward sleep analysis without overwhelming complexity. You see your sleep duration, efficiency, and stage distribution. The interface emphasizes accessibility over deep technical metrics.

Resting heart rate tracking shows your cardiovascular health trends. The ring detects variations that might indicate stress or illness. Blood oxygen monitoring adds another health data point.

Battery and Design: The Evie Ring lasts about 4 days between charges. The charging case provides a compact way to power up. A full charge takes roughly 90 minutes.

The design comes in multiple finishes with a focus on aesthetics. The ring looks like jewelry more than tech. This appeals to users who want style alongside functionality.

The Evie Ring costs $269 with no subscription required. All features stay free forever, which saves money compared to subscription models.

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Pros:
✓ Women-specific health features
✓ Period and ovulation tracking
✓ Pregnancy monitoring
✓ Affordable pricing
✓ No subscription fees

Cons:
✗ Shorter battery life (4 days)
✗ Limited features for male users
✗ Smaller data ecosystem
✗ Some reliability issues reported
✗ Less advanced sleep analysis

How to Choose the Right Smart Ring for Sleep Monitoring

Consider Your Budget: Prices range from $199 to $499 for the ring itself. Factor in subscription costs if applicable. Oura charges $5.99 monthly, which adds $71.88 per year. Over three years, that’s $215.64 extra. No-subscription rings save this money.

Evaluate Battery Life Needs: Daily charging gets annoying fast. Look for rings offering at least 5-7 days between charges. The RingConn’s 12-day battery leads the pack. Shorter battery life means more frequent charging interruptions.

Check Compatibility: Verify the ring works with your smartphone. Some rings work better with specific ecosystems. The Galaxy Ring excels with Samsung devices but offers limited iPhone features. Most rings support both iOS and Android.

Assess Feature Priorities: Decide which metrics matter most. Basic sleep tracking suits casual users. Advanced features like ECG, sleep apnea detection, and AI coaching benefit health-focused individuals. More features typically mean higher prices.

Size and Comfort Matter: Order a sizing kit before buying. Rings feel different than wedding bands due to sensors. A tight fit causes discomfort and inaccurate readings. A loose fit risks losing the device.

Think Long-Term: Consider your commitment level. Subscription models require ongoing payments. Free-forever rings cost more upfront but save money over time. Calculate your three-year total cost of ownership.

Understanding Smart Ring Sleep Metrics

Sleep Stages Explained: Your body cycles through four stages each night. Light Sleep comprises about 50-60% of total sleep and helps with memory consolidation. Deep Sleep supports physical recovery and immune function. REM Sleep enhances learning and emotional processing. Smart rings detect these stages through heart rate and movement patterns.

Heart Rate Variability (HRV): This metric measures the time between heartbeats. Higher HRV indicates better recovery and lower stress. Your HRV naturally decreases with age but improves with quality sleep and exercise. Smart rings track HRV trends to show recovery status.

Respiratory Rate: Normal breathing rates during sleep range from 12-20 breaths per minute. Elevated rates might indicate stress, illness, or sleep disorders. Lower rates sometimes signal deep relaxation. Smart rings monitor this continuously.

Body Temperature: Your core temperature drops during sleep and rises before waking. This pattern follows your circadian rhythm. Temperature variations can indicate illness, hormonal changes, or environmental factors affecting sleep.

Sleep Efficiency: This percentage shows time asleep versus time in bed. Scores above 85% indicate good sleep efficiency. Lower scores suggest difficulty falling asleep or frequent waking. Improving efficiency often matters more than extending total sleep time.

Can Smart Rings Replace Medical Sleep Studies?

Smart rings provide valuable data but cannot fully replace professional sleep studies. Medical polysomnography monitors brain waves, eye movements, muscle activity, and more. These detailed measurements detect conditions smart rings cannot identify.

However, smart rings excel at tracking trends over time. They show patterns that single-night sleep studies might miss. The continuous monitoring reveals how lifestyle changes affect your rest.

Consider smart rings as screening tools rather than diagnostic devices. Concerning patterns warrant discussion with healthcare providers. Sleep apnea detection features especially warrant medical follow-up for proper diagnosis and treatment.

Frequently Asked Questions

Are smart rings accurate for sleep tracking?

Smart rings achieve 85-95% accuracy compared to medical sleep studies for basic metrics like sleep duration and wake times. Sleep stage detection accuracy ranges from 70-85% depending on the ring quality. Premium rings like Oura and Samsung show better accuracy than budget options. Heart rate tracking typically maintains 95%+ accuracy during rest.

How long do smart ring batteries last?

Battery life varies significantly by model. Budget rings last 4-5 days while premium options reach 7-12 days. The RingConn Gen 2 leads with 12 days of battery life. Oura and Samsung both deliver about 7 days. Frequent syncing and continuous heart rate monitoring drain batteries faster.

Do I need a subscription for smart rings?

Not always. Oura requires a $5.99 monthly subscription after the first month for full features. Samsung, Ultrahuman, RingConn, Amazfit, Circular, and Evie offer all features without subscriptions. Subscription-free rings provide better long-term value despite sometimes higher upfront costs.

Can smart rings detect sleep apnea?

Only the RingConn Gen 2 includes dedicated sleep apnea monitoring with medical-grade accuracy. It calculates an Apnea-Hypopnea Index (AHI) to show breathing disruption severity. Other rings track blood oxygen and heart rate patterns that might suggest apnea but cannot diagnose it. Consult a doctor if you suspect sleep apnea.

How comfortable are smart rings during sleep?

Most users forget they’re wearing smart rings within a few days. Rings weighing under 4 grams feel nearly weightless. Proper sizing matters critically for comfort. Titanium rings resist temperature changes and feel neutral on your skin. Some users prefer removing rings briefly if fingers swell during sleep.

Which smart ring has the best app?

Oura’s app leads with comprehensive insights, intuitive design, and personalized recommendations. Samsung Health offers excellent integration for Galaxy users. Ultrahuman provides unique metabolic insights. Budget options like Amazfit have functional but basic apps. Consider app quality alongside hardware features when choosing.

Can I wear smart rings while exercising?

Yes, most smart rings track activity and workouts effectively. They monitor heart rate, calories, and intensity during exercise. Rings offer more comfort than watches during weightlifting, yoga, and contact sports. Water resistance ratings typically support swimming. However, rings lack GPS for distance tracking outdoor runs.

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Final Thoughts

Smart rings have matured into powerful sleep tracking tools in 2025. The technology delivers accurate insights in a comfortable, unobtrusive package. Whether you choose a premium option like Oura or an affordable alternative like Amazfit depends on your budget and feature priorities.

Consider the total cost of ownership including subscriptions. Think about which metrics matter most for your health goals. Try a sizing kit before committing to ensure comfort. With the right smart ring on your finger, you can unlock better understanding of your sleep patterns and take steps toward improved rest and recovery.

Last update on 2026-01-15 / Affiliate links / Images from Amazon Product Advertising API