Leep Ring vs Oura Ring 4 vs Ultrahuman Ring Air vs RingConn Gen 2 vs Samsung Galaxy Ring
Price, subscription cost, battery life, sensors and key features for five sleep rings, each taken from the brand's own pages and checked Oct 2026.
By Kymata Health Editorial Published Last checked
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This guide
Sleep Trackers & Smart Rings- Question
- Which smart ring is best value: Leep, Oura, Ultrahuman, RingConn or Samsung Galaxy Ring?
- Sources
- 14 cited
- Quick answers
- 3 questions
- Clinician review
- None; sources cited inline
Key takeaways
5 points- Cheapest to own: Leep at $199 with no subscription3. RingConn Gen 2 ($299) and Galaxy Ring (from $299.99 on Samsung's US page) also have no subscription7910.
- Oura Ring 4 starts at $349, and full features need a $5.99/month or $69.99/year membership; without it the app is "much more limited"45.
- Longest battery: RingConn Gen 2 at 10 to 12 days by size7. Shortest: Ultrahuman Ring Air at 4 to 6 days6.
- All five use optical (PPG) heart sensors, a temperature sensor and a motion sensor, so the raw ingredients are similar; the differences are in battery, software and price.
- Validation is lopsided: Oura has the most sleep-lab studies (many Oura-funded); we found no published sleep-tracking validation for Leep, Ultrahuman Ring Air, RingConn Gen 2 or Galaxy Ring. See what sleep rings can and can't measure.
How we compared them
Every price, battery figure and sensor list below comes from each brand's official pages (US pages where available; Samsung's no-subscription answer is from its Australian FAQ), read on Oct 14, 2026. Prices change often and sales come and go, so treat each one as "checked Oct 2026". We did not test the rings ourselves, and a spec sheet tells you nothing about accuracy: that is covered in our evidence explainer.
This page format has no table, so the comparison runs attribute by attribute, with the five rings in the same order every time: Leep, Oura, Ultrahuman, RingConn, Samsung.
Ring price (checked Oct 2026)
Upfront price for the ring itself, before any membership:
- Leep Ring: $199 US list price; £199 on the UK shop31.
- Oura Ring 4: from $349 (Silver finish; other finishes can cost more)4.
- Ultrahuman Ring Air: $3496.
- RingConn Gen 2: $299; the US page showed it out of stock when we checked7.
- Samsung Galaxy Ring: "from $299.99 before trade-in" on Samsung's US page; the buy page listed all three finishes as out of stock when we checked9.
Subscription cost
Over three years, Oura Ring 4 at $349 plus its membership (about $5.83 a month on the $69.99 yearly plan) comes to about $559 before tax, against $199 for Leep; that arithmetic uses only the prices on this page453.
- Leep: none; the app has no paid tiers2.
- Oura: $5.99/month or $69.99/year in the US, first month free for new members. Without it the ring and app still work, but insights are "much more limited"5.
- Ultrahuman: no subscription for ring data; some optional add-on "PowerPlugs" are sold separately (for example, a heart-monitoring plug-in at $2 a month, $24 a year, on its US store)6.
- RingConn Gen 2: none ("No Subscriptions")7.
- Galaxy Ring: Samsung says Galaxy Ring data in Samsung Health has no subscription fee10.
Battery life (brand claims)
Battery figures are each brand's own claim and vary with ring size and settings:
- Leep: up to 8 days; the charging case adds 60+ days of backup power1.
- Oura Ring 4: 5 to 8 days, depending on size, settings and use4.
- Ultrahuman Ring Air: 4 to 6 days; open wireless charging pad, no battery case6.
- RingConn Gen 2: up to 10 days (sizes 6 to 7), 11 days (8 to 11) or 12 days (12 to 14); the case adds up to 150 days; sleep-apnea monitoring increases drain7.
- Galaxy Ring: up to 7 days for sizes 12 and 13, up to 6 days for smaller sizes9.
Sensors
Sensor lists as each brand publishes them:
- Leep: PPG with a green LED (heart rate, HRV) and a red LED (SpO2), skin temperature, accelerometer2.
- Oura Ring 4: red and infrared LEDs (blood oxygen), green and infrared LEDs (heart rate, HRV, respiration rate), digital temperature sensor, accelerometer4.
- Ultrahuman Ring Air: PPG, temperature sensor, 6-axis IMU6.
- RingConn Gen 2: PPG sensors, temperature sensor, 3-axis accelerometer8.
- Galaxy Ring: optical bio-signal sensor, skin temperature sensor, accelerometer9.
Key features and catches
What stands out on each brand's own page, good and bad:
- Leep: 2.22 mm thin, on-device data processing, two weeks of offline storage, CSV export; periodic background sampling; no VO2 max21.
- Oura Ring 4: a broad app covering heart health, stress, metabolic and women's health, with most insights tied to the membership45.
- Ultrahuman Ring Air: 2.4 g and 2.4 mm thick, with optional women's-health and heart PowerPlugs, but only 4 days of on-ring storage6.
- RingConn Gen 2: "sleep apnea monitoring" that estimates an AHI and counts SpO2 drops of 3% or more, with a 90.7% accuracy figure on its page that we could not trace to a peer-reviewed study8. It is not a diagnosis: sleep apnea is diagnosed with a clinician-ordered sleep study12.
- Galaxy Ring: Energy Score, snore detection (phone within 2 feet) and cycle tracking; setup needs a Samsung account on a Galaxy smartphone, and several features need a compatible Galaxy phone9. FDA cleared Samsung's sleep apnea risk feature for the ring in July 2026; it screens for signs of moderate to severe apnea and is not a diagnosis13. Samsung said it would arrive in a fall 2026 update14, and it was not on the US product page when we checked9.
Warranty and returns
Who should pick which
No ring wins on everything. Our honest picks:
- Leep: you want sleep and recovery trends at the lowest total cost and don't need extras. Read our Leep Ring review first.
- Oura Ring 4: you want the most-studied ring and the richest app, and you are fine paying a membership.
- RingConn Gen 2: battery life matters most, or you want overnight SpO2 data to take to a doctor as a conversation starter, not a diagnosis.
- Galaxy Ring: you already use a Samsung Galaxy phone and want everything inside Samsung Health.
- Ultrahuman Ring Air: you want a very light ring with optional add-ons, and can live with charging every few days.
Where to buy
Leep Ring
Paid links · we earn a commission$199 one-time in the US with no subscription. Tracks sleep, heart rate, HRV, skin temperature, activity and estimated blood oxygen; up to 8 days per charge plus a charging case with 60+ days of backup power; 30-day returns and a 1-year warranty (checked Oct 14, 2026). A wellness tracker, not a medical device.
See the Leep Ring (paid link, opens in new tab)
Quick answers
Questions
3 answersWhich of these smart rings has no subscription?
Leep, RingConn Gen 2 and Galaxy Ring have none2710. Ultrahuman has no subscription for ring data but sells optional add-ons6. Oura needs a $5.99/month membership for full features5.
Which ring has the longest battery life?
RingConn Gen 2, at 10 to 12 days depending on size7.
Is the Leep Ring as accurate as Oura?
Nobody knows yet. Leep itself says the two have not been tested against each other2, and we found no independent sleep-lab study of Leep. See the evidence explainer.
More in Sleep Trackers & Smart Rings
Keep reading
5 pages- Sleep Trackers & Smart Rings hubEvery guide, regulatory notes and sources
- Leep Ring review: a $199 sleep ring with no subscription, and where it falls short
- What sleep rings can and can't measure: what the polysomnography studies show
- Can a Smartwatch or Smart Ring Detect Sleep Apnea? What FDA Has Authorized and How Accurate It Is
- Orthosomnia: Can Sleep Tracking Make Your Sleep Worse? What the Studies Show
Keep reading: Supplements and vitamins
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- Previous in this topicLeep Ring review: a $199 sleep ring with no subscription, and where it falls shortWhat the Leep Ring tracks, what it costs, how long the battery lasts, and the trade-offs against pricier rings, all from Leep's own pages (checked Oct 2026).
- Next in this topicWhat sleep rings can and can't measure: what the polysomnography studies showSmart rings are good at telling sleep from wake and at overnight heart rate.
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- L-theanineL-theanine is a non-protein amino acid found naturally in tea (Camellia sinensis), alongside caffeine and polyphenols.
References
Every study and document cited in this guide, numbered as in the text.
Sources
14 sources- 1Leep Ring: shop page and specifications. Leep Health, 2026.
- 2Leep Ring FAQs: sizing, battery, app and more. Leep Health, 2026.
- 3True 3-year cost of 16 wearables (official US list prices, August 2026). Leep Health, 2026.
- 4Oura Ring 4: product page and tech specifications. Oura Health, 2026.
- 5Oura Membership. Oura Health, 2026.
- 6Ultrahuman Ring: compare Ring PRO vs Ring AIR (US store). Ultrahuman, 2026.
- 7RingConn Gen 2: product page and specifications. RingConn, 2026.
- 8RingConn Gen 2 features. RingConn, 2026.
- 9Galaxy Ring (US product page). Samsung, 2026.
- 10Buy Galaxy Ring: FAQs (subscription question). Samsung, 2026.
- 11Returns & Refunds Policy. Leep Health, 2026.
- 12Clinical Practice Guideline for Diagnostic Testing for Adult Obstructive Sleep Apnea: An American Academy of Sleep Medicine Clinical Practice Guideline. J Clin Sleep Med, 2017. PMID 28162150
- 13510(k) K261011: Sleep Apnea Feature (v2.0), Samsung Electronics Co., Ltd.. U.S. Food and Drug Administration, 2026.
- 14Samsung announces FDA-cleared smart ring for sleep apnea risk. MobiHealthNews, 2026.
Dietary supplements are not intended to diagnose, treat, cure or prevent any disease, and these statements have not been evaluated by the FDA. Prescription options need a licensed clinician. Talk to your clinician or pharmacist before starting anything new, especially if you take prescription medicines, are pregnant or breastfeeding.