DEPLOY

Consumer model

Oura Ring 4

By Oura · biometric

Price
$349-$499· actual sale price
Availability
Shipping now.
Maturity
commercial
Real-world use
No verified deployments

The Oura Ring 4 (Gen 4, late 2024, from Oura, founded 2013 in Oulu, Finland) is a titanium biometric smart ring and the study-first archetype of the biometric cohort. Its 'Smart Sensing' recessed sensors (PPG heart rate and HRV, red and infrared blood-oxygen, multi-point skin temperature, accelerometer) feed 50-plus metrics: sleep staging and Sleep Score, Readiness, Activity, stress, cycle tracking, a VO2 Max estimate, and an LLM 'Oura Advisor'. It is sold as a purchase (from about $349) plus a required Oura Membership ($5.99/month); the AI augments genuine biometric sensing rather than being the product. DEPLOY records commercial maturity and a reported $11 billion valuation (October 2025). The verified-vs-claimed throughline: Oura is positioned as general wellness and is not FDA-cleared for diagnostics, and it ran a blood-pressure study in December 2025 before marketing blood pressure, the study-first counterpoint to Whoop's market-first BP Insights. Oura is also the patent-holder in the smart-ring litigation (RingConn settled; Ultrahuman was ITC import-banned via the '178 patent).

Readiness

Oura Ring 4 is shipping now at $349-$499 (actual sale price), no capability claims are on file, the model has no verified field deployments in the registry, and no incidents are on record.

Availability
shipping-now

Shipping now.

see evidence →

Price honesty
actual-sale-price

One price on file: $349-$499 (actual sale price).

see evidence →

Capability honesty
no-claims

No reviewed capability claims on file for Oura Ring 4.

see evidence →

Real-world use
commercial

Maturity: commercial. No verified deployments in the registry.

see evidence →

Safety record
no-incidents

No incidents on record. No verified deployments either.

What it claims to do

No reviewed capability claims on file.

Price

Real-world use

No verified deployments on file for Oura Ring 4.

Safety record

No incidents on record. No verified deployments either, so the absence is uninformative.

Privacy

No privacy practices disclosed or on file for Oura Ring 4.

Specs

notes
[{"label":"FDA clearances (minimal - the disciplined posture)","value":"The Oura Ring 4 itself has NO FDA clearance; it is marketed as a GENERAL-WELLNESS product under FDA's general-wellness policy. Cleared-feature route is via PARTNER integrations (e.g. Natural Cycles, an FDA-cleared birth-control app, consuming Oura temperature data - the clearance belongs to Natural Cycles, not Oura)."},{"label":"Disciplined counter-case to Whoop (verified-vs-claimed)","value":"Oura launched a Blood Pressure Profile Study (Dec 2025) pursuing a hypertension feature, but it is INVESTIGATIONAL and NOT cleared - Oura is running the study/clearance path BEFORE marketing BP. This is the disciplined counter-case to Whoop's market-first posture (which drew an FDA warning letter for marketing uncleared BP)."},{"label":"CORRECTION (valuation)","value":"Valuation is $11B (Series E ~$900M, Oct 2025, Fidelity-led; revenue reportedly >$1B in 2025) - NOT the stale ~$5B+."},{"label":"Verification posture","value":"Boundary: biometric-primary + AI-augmented. Clinical posture: STRONGEST/growing on SLEEP (2025 Brigham & Women's study found Oura the most accurate consumer sleep tracker for 4-stage classification vs PSG; ~94% sleep/wake sensitivity vs PSG; 2026 meta-analysis corroborated). Posture is 'validated wellness', not 'cleared medical device' (except via partners). NOT verified: BP/hypertension feature (investigational); Readiness/VO2 Max accuracy (not clearance-validated)."}]
specs
Oura Ring 4 (Gen 4, late 2024). Titanium smart ring; 'Smart Sensing' (recessed sensors, signal pathways 8->18); ~8-day battery. Sensors: PPG HR + HRV, red/IR blood-oxygen (SpO2 trends), multi-point skin temperature, accelerometer. Outputs: Sleep staging + Sleep Score, Readiness Score, Activity, stress, Cycle tracking + Natural Cycles integration, VO2 Max estimate, AI 'Oura Advisor' (LLM). 50+ metrics. Founded 2013, Oulu Finland. Purchase (~$349+) + REQUIRED Oura Membership ($5.99/mo).
formFactor
biometric (biometric-primary smart ring + AI augmentation; sleep/readiness; general-wellness)

What's under the hood

No brain on file for Oura Ring 4.

Frequently asked questions

Is the Oura Ring 4 actually available for purchase?
Yes, shipping now.Source: Oura raises ~$900M Series E at $11B valuation (Oct 2025; Fidelity-led)
What does the Oura Ring 4 cost?
Oura Ring 4 costs $349-$499 one-time (actual sale price).Source: Oura (Ring 4)
Where is the Oura Ring 4 being used?
No verified field deployments on record.
Is the Oura Ring 4 safe?
No incidents on record, but with no verified field deployments either, the absence is uninformative.
How does the Oura Ring 4 handle privacy?
No privacy practices disclosed or on file for Oura Ring 4.
Who makes the Oura Ring 4?
Oura Ring 4 is made by Oura, based in Oulu, Finland.Source: Oura raises ~$900M Series E at $11B valuation (Oct 2025; Fidelity-led)

Manufacturer

Oura (registry record: /companies/oura)

Compared to

Sources

  1. Oura raises ~$900M Series E at $11B valuation (Oct 2025; Fidelity-led) · https://www.cnbc.com/2025/10/14/oura-smart-ring-11-billion-valuation.html
  2. Oura Ring 4 (Gen 4, late 2024): Smart Sensing, signal pathways 8->18; sleep/readiness/temp; AI Advisor · https://ouraring.com/blog/oura-ring-4/
  3. Oura pursuing a hypertension feature via a Blood Pressure Profile Study (Dec 2025; investigational) · https://www.medtechdive.com/news/oura-blood-pressure-fda-study/
  4. Oura Ring sleep-staging validated PSG-comparable (Brigham & Women's study) · https://sleepreviewmag.com/sleep-diagnostics/consumer-sleep-tracking/oura-ring-4-sleep-accuracy/
  5. Oura (Ring 4) · https://ouraring.com/product/oura-ring-4 · 2024-10-01

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Canonical: https://deploy.report/models/oura-ring-4