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If you’re trying to pick the best smart ring for sleep tracking, here’s the fast answer:
- Best overall: RingConn Gen 2
- Best for iPhone + deep sleep insights: Oura Ring 4
- Best for Galaxy/Android guys: Samsung Galaxy Ring
- Best for performance & recovery nerds: Ultrahuman Ring Air
- Best budget, no-subscription pick: RingConn Gen 2 Air
Why this matters: if your sleep is off, everything feels harder—lifting, focus, mood, even cravings. The right smart ring doesn’t just show you pretty charts; it actually helps you understand what ruins your sleep and what fixes it.
Best Smart Ring for Sleep Tracking: Comparison Table
| Products | Oura Ring 4 | RingConn Gen 2 | Samsung Ring | RingConn Gen 2 Air | Ultrahuman Ring Air |
|---|---|---|---|---|---|
 |  |  |  |  | |
| Best For | Best for: Overall smart ring for women | Best value & sleep apnea awareness | Best women-focused health & cycle | Best lightweight budget choice | Best for recovery & metabolic focus |
| Subscription | No | Yes (monthly) | No | No | No |
| Battery LIfe | ~12 days | Up to ~8 days | ~10–12 days | Mid-range | ~10 days |
| Charging | charging case | Tabletop dock | Portable charging case | Dock | Dock |
| Health | Sleep apnea + general wellness | General wellness, sleep, activity | Sleep, readiness, activity trends | Recovery, stress, metabolism | Sleep + activity + Galaxy AI |
| Look & Feel | Thin and minimal | Most jewelry-like | Ultra-thin, minimal | Open, adjustable band | Slim, simple |
| Price |  | | | | |
Why These 5 Are the Best Smart Rings for Sleep Tracking
When I searched “best smart ring for sleep tracking,” the same names kept showing up at the top: Oura, RingConn, Samsung Galaxy Ring, and Ultrahuman in big tech roundups and sleep-focused reviews.
Here’s what the top sites consistently praised:
- Oura Ring 4 – still the benchmark for sleep stage accuracy + readiness scores, now with better battery and sensors.
- RingConn Gen 2 – standout for sleep apnea monitoring (AHI estimates) plus strong sleep staging and SpO₂ tracking.
- Samsung Galaxy Ring – a “fantastic first-generation effort” with surprisingly good sleep tracking integrated into Samsung Health.
- Ultrahuman Ring Air – praised for comfort and sleep + recovery insights, especially by runners and lifters.
- RingConn Gen 2 Air – a lighter, cheaper version of RingConn with 10-day battery and strong sleep tracking called out directly in its marketing.
From there, I filtered for:
- Overnight comfort (can you actually sleep in this thing?)
- Depth of sleep data (stages, HRV, SpO₂, temp, apnea risk)
- Battery life (so you’re not charging at bedtime every other night)
- Long-term cost (subscriptions vs one-time purchase)
Best Sleep Tracking Smart Rings
1. Sleep Tracking Accuracy & Metrics
Oura Ring 4
Oura 4 is still the “if you care about sleep, start here” ring. It tracks sleep stages (light, deep, REM), HR, HRV, SpO₂, temperature, movement, and rolls that into Sleep and Readiness scores that actually match how you feel the next morning. Sleep reviewers and big outlets consistently point to Oura as the gold standard for consumer sleep tracking.
RingConn Gen 2
RingConn Gen 2 goes a step further by adding automatic sleep apnea monitoring. It tracks sleep stages, breathing interruptions, SpO₂, and calculates AHI estimates to gauge possible sleep-disordered breathing—all while still doing the usual sleep scoring. For sleep-health nerds, that apnea layer is huge.
RingConn Gen 2 Air
Gen 2 Air keeps the same advanced sleep tracking + AI health insights, just in a lighter, cheaper ring with a simpler charger. It doesn’t emphasize apnea quite as hard in its marketing, but it’s clearly built around precise sleep and multi-dimensional wellness.
Samsung Galaxy Ring
Galaxy Ring’s sleep tracking feeds straight into Samsung Health, combining ring data with your phone (and optionally watch). Wareable calls it a “fantastic first-generation effort” that does sleep well, even if it’s not as deep or interpretive as Oura’s system yet.
Ultrahuman Ring Air
Ultrahuman focuses on sleep + recovery. Reviews say it’s extremely comfortable to sleep in, and when things are working smoothly, its sleep insights and nightly recovery feedback can be excellent—though some reviewers note first-gen quirks and room for improvement on sensor features.
2. Comfort & Battery for Overnight Wear
Oura Ring 4 gives you 5–8 days on a charge according to Oura and independent testing, with many users landing in that range depending on size and features. It’s smooth, rounded, and made for 24/7 wear.
RingConn Gen 2 is ultra-thin with up to 12-day battery life and a portable charging case, which means you can sleep in it for over a week without thinking about a charger. That’s ideal if you travel or just forget chargers constantly.
RingConn Gen 2 Air is lighter still (around 2.5 g) with up to 10 days of battery life. That combination—tiny + long battery—is killer for sleep comfort.
Samsung Galaxy Ring aims for up to 7 days of battery in normal use, and user reports mention still being at ~70% after several nights of sleep tracking. Pair that with a concave titanium design and you get a ring that feels robust but still sleepable.
Ultrahuman Ring Air leans hard on comfort; reviewers repeatedly mention forgetting it’s on during sleep. Battery lands closer to 4–6 days, which is solid, just not as crazy as RingConn’s 10–12.
3. Apps, Insights & Long-Term Value
Oura Ring 4
Oura’s app is the most polished: gorgeous visuals, clear Sleep and Readiness scores, and tight explanations of why you feel the way you do. The trade-off: you pay a monthly membership for full data access.
RingConn Gen 2 / Gen 2 Air
RingConn’s app is more “data-dense” than sexy, but you get full features with no subscription at all. For sleep tracking value over 2–3 years, it’s arguably the best deal in the ring world right now.
Samsung Galaxy Ring
Galaxy Ring’s insights live in Samsung Health, with Galaxy AI increasingly tying sleep data into bigger wellness stories (like fatigue, readiness for the day, etc.). There’s no separate ring subscription, which makes it an easy add-on if you already own a Galaxy phone or watch.
Ultrahuman Ring Air
Ultrahuman builds its brand around sleep, recovery, and metabolism, and its app reflects that. You get actionable prompts about sleep timing, caffeine, late meals, and training load—but reviews mention that it’s still evolving as a platform.
Pros and Cons (Each Smart Ring)
Oura Ring 4
Pros
- Industry-leading sleep stage + Readiness scores
- Strong science-backed reputation and lots of third-party reviews
- Beautiful, jewelry-like designs that you can wear 24/7
Cons
- Requires monthly membership for full insights
- Not the longest battery life on this list
- Pricey over several years if you keep the subscription
RingConn Gen 2
Pros
- Automatic sleep apnea monitoring with AHI estimates
- Up to 12 days of battery + portable charging case
- No subscription; full sleep data unlocked out of the box
- Very thin and comfortable for all-night wear
Cons
- App is more utilitarian and less “glossy” than Oura’s
- Ecosystem/integrations are still smaller than Oura/Samsung
RingConn Gen 2 Air
Pros
- Up to 10 days of battery, extremely lightweight
- Strong AI-driven sleep and wellness insights
- Lower upfront cost than full Gen 2, still no subscription
- Great “value” sleep tracker for most people
Cons
- Less marketing emphasis on apnea than Gen 2
- Slightly less premium build than the titanium Gen 2
Samsung Galaxy Ring
Pros
- Solid sleep tracking tightly integrated with Samsung Health
- Titanium build, nice concave design, feels robust
- No extra ring-specific subscription
- Pairs perfectly with Galaxy phones and optional watch
Cons
- Best only if you’re already in the Samsung ecosystem
- Sleep insights are good, but not as deep as Oura/RingConn yet
- First-gen product, still maturing via software updates
Ultrahuman Ring Air
Pros
- Extremely comfortable for overnight wear
- Strong focus on sleep, recovery, and metabolic health
- No mandatory subscription; one-time hardware cost
- Great fit for athletes and biohackers
Cons
- Some reviews say sensor features are still first-gen
- Sleep tracking is good but not clearly ahead of Oura/RingConn yet
- Availability and legal status can vary by region
Major Differences & How to Choose
Here’s how I’d match the best smart ring for sleep tracking to real-world situations:
- You want the most proven sleep ring with the best app:
→ Oura Ring 4 is still the reference for consumer sleep tracking and readiness. - You’re worried about snoring or sleep apnea risk:
→ RingConn Gen 2 is the only mainstream smart ring aggressively focused on sleep apnea monitoring (AHI) on top of normal sleep metrics. - You want maximum sleep data but hate subscriptions:
→ RingConn Gen 2 or RingConn Gen 2 Air—both give you full sleep insights without a monthly bill. - You’re a Galaxy phone guy/gal and want sleep tracking that just plugs in:
→ Samsung Galaxy Ring is the obvious pick; it turns Samsung Health into your one sleep dashboard. - You treat sleep as part of a bigger performance plan (training, metabolism, recovery):
→ Ultrahuman Ring Air is the most “coach-like” of the bunch for that kind of user.
FAQs About the Best Smart Ring for Sleep Tracking
1. Which smart ring tracks sleep most accurately?
For most people, Oura Ring 4 is still the safest bet for the most polished, accurate-feeling sleep experience. If you factor in sleep apnea risk and SpO₂ monitoring, RingConn Gen 2 is right there too—especially if breathing issues are a concern.
2. Is RingConn Gen 2 better than Oura Ring 4 for sleep?
If you want sleep apnea monitoring and long battery with no subscription, yes, RingConn Gen 2 is better for you. If you care more about a super-polished app, clean readiness scores, and integrations, Oura Ring 4 has the edge.
3. Is Samsung Galaxy Ring good enough for sleep tracking?
Yes. Galaxy Ring gives you solid sleep tracking that plugs directly into Samsung Health. It’s not quite as deep or fine-tuned as Oura’s system yet, but if you’re already using a Galaxy phone (and maybe a watch), it’s an excellent, seamless option.
4. Are smart rings accurate enough to replace a sleep study?
No. Rings like Oura and RingConn are great screening tools and habit trackers, but they don’t replace a full medical sleep study. RingConn’s apnea monitoring and Oura’s metrics can hint that something’s wrong, but you should always talk to a doctor for diagnosis.
5. Which smart ring is best for sleep tracking with no subscription?
The strongest no-sub sleep picks are RingConn Gen 2, RingConn Gen 2 Air, Samsung Galaxy Ring, and Ultrahuman Ring Air. Among those, RingConn Gen 2 gives the deepest sleep + apnea combo while staying subscription-free.
6. What’s the best smart ring for sleep tracking overall?
If I had to crown one winner, I’d still say Oura Ring 4 is the best smart ring for sleep tracking overall, with RingConn Gen 2 as the best long-term, no-subscription alternative—especially if you care about apnea.
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About the Author
At Trimflo, I’m obsessed with gear that genuinely moves the needle on your health—whether that’s a weighted vest or the best smart ring for sleep tracking. Every recommendation here comes from digging into specs, independent reviews, and long-term cost so you can stop guessing, pick the right ring, and finally start fixing your sleep.