Sensor Bio
vs Oura

A wellness tracker tells a person a score and stops there. A signal platform shows the score, the raw signal behind it, and hands over the data to prove it.

Everything the Sensor Bio SDK hands you on day one.

Eight categories of physiological data, fetchable per day or across a range, with the raw datapoint series underneath every summary. No separate license. No gated tier.

Compiled from the public SensorBio SDK interface, v0.17.0. Categories one through seven are fetched from the cloud after sync, per day or across a date range, with cached and force-remote variants. Sensor Bio V2 is a general wellness device: not FDA-cleared, not FDA-approved, not intended for diagnostic use.

What the public Oura Cloud API actually exposes.

OAuth2 authorization-code integration for apps that already have Oura members. Daily scores, sleep-session summaries, and 5-minute heart-rate samples — not a raw-signal product. Personal access tokens were deprecated in December 2025. Sourced from the public Cloud API v2 docs at cloud.ouraring.com/v2/docs as of 2026-10-28.

How the two platforms actually compare.

Specification	Platform Sensor Bio V2	Platform OURA Oura Ring 4
Hardware
Band material	Matte black woven nylon diamond-weave, low-profile curved module	Oura Ring 4: titanium with PVD or DLC coating depending on finish; Ceramic option in zirconia. Sizes 4–15. As of 2026-10-28, support.ouraring.com Ring 4 article. Current store flagship is Ring 5; hero shows Ring 4 because no official Ring 5 transparent packshot was found.
Case material	Plastic and polycarbonate sensor housing with TiN electrodes	Ring form factor. Inner shell is non-allergenic titanium (BPA-free). As of 2026-10-28, support.ouraring.com Ring 4 article.
Sensor hardware	Multi-wavelength raw PPG with three-axis accelerometer and temperatureUp to 100 Hz raw export	Smart Sensing: red and infrared LEDs for sleep SpO2; green and infrared PPG for 24/7 heart rate / HRV and sleep respiration; digital temperature sensor; accelerometer. Oura’s Ring 4 technology page describes an 18-path multi-wavelength PPG subsystem. As of 2026-10-28, support.ouraring.com and ouraring.com/blog/technology-in-oura-ring-4/.
Continuous wear and battery	3-4 days of continuous PPG captureFull charge in 2 to 4 hours, roughly 15 minutes for a top-up. USB-C	Typically 5–8 days on Ring 4. Charge typically 20–80 minutes. As of 2026-10-28, support.ouraring.com Ring 4 / battery articles. Ring 5 store pages list 6–9 days; not used for these cells because the hero is Ring 4.
Water resistance	IP68, water-resistant to 1.5 m for 30 minutesAvoid prolonged hot showers, saunas, steam rooms, and soaps or chemicals, which degrade water resistance over time	100 m / 328 ft, suitable for sauna and water sports but not diving. Ring 5 store pages also list IP68. As of 2026-10-28, support.ouraring.com Ring 4 article.
Weight and fit	About 1 oz, one size, adjustable, all-day wear	Width 7.90 mm, thickness 2.88 mm, weight 3.3–5.2 g across sizes 4–15. As of 2026-10-28, ouraring.com/blog/technology-in-oura-ring-4/.
Operating temperature	−40°C to +85°C	−10°C to +54°C / 14–129°F. Charging at room temperature recommended. As of 2026-10-28, support.ouraring.com Ring 4 article.
Sync	Bluetooth Low Energy 5.0, one-touch pairing, no PIN required	Bluetooth Low Energy (Bluetooth Smart®). EMF-safe; airplane mode listed. As of 2026-10-28, support.ouraring.com Ring 4 article.
Platform
Design philosophy	Signal-first screenless band. Scores sit on top of exposed raw signal, not in place of it	Screen-free consumer ring that feeds Sleep, Readiness, and Activity insights in the Oura membership app
Backend model	Built as infrastructure. Every partner builds directly on the platform	Oura membership cloud. Public Cloud API v2 is OAuth2 daily-score and 5-minute heart-rate integration for apps
White-label and OEM	Native white-label, partner brand from the first deployment	Not listed as a white-label or OEM product path on ouraring.com as of 2026-10-28. Organizations deployments still use the Oura Ring and Oura App.
Customization	Configured per deployment: clinical, defense, or researchData model, retention, and reporting shaped to the environment	Configured per individual membership and Oura App settings as of 2026-10-28
Primary market	B2B enterprise solutions	Individual consumers in the Oura membership ecosystem, with a separate Organizations / research program
Data
Raw signal access	Raw waveform export is the default data productRaw PPG, IBI, accelerometer, and gyroscope, up to 100 Hz	Continuous raw PPG waveforms, raw accelerometer series, beat-to-beat IBI, and an on-device streaming SDK are not listed on the public Oura Cloud API v2 docs as of 2026-10-28. Organizations pages mention CSV/JSON “raw data” export — partners should confirm what that export contains.
Scores and insights	Activity, recovery, and sleep scores, always paired with the raw signal behind themEvery score carries the context for what drove the number	Sleep, Readiness, and Activity scores, plus daily SpO2, stress, resilience, cardiovascular age, and VO₂ max — the documented public Cloud API output as of 2026-10-28
On-device storage	Local buffer pending BLE sync7 days to 6 months depending on configuration	Up to one week (seven days) of on-device storage on Ring 4, per Oura’s Ring 5 vs Ring 4 comparison (as of 2026-10-28). Ring 5 lists up to three days.
Cloud and history	Sensor Bio cloud platform, with raw data export to partners	Public API collections are date-filtered and paginated. Docs recommend one historical pull at connect, then webhooks. A partner-configurable retention window is not listed as of 2026-10-28.
Reporting and clinician share	Customizable RPM dashboard with raw and derived exportTrending window set by the partner, not by us	Oura app insight views. Public Cloud API returns scored objects and 5-minute heart-rate samples. Organizations pages list dashboards, an Enterprise API, and CSV/JSON export as of 2026-10-28.
Biometrics
Heart rate	Continuous raw PPGCadence is customizable: periodic or continuous, with the raw waveform retained1-second resolution during active captures, 1-minute averages otherwiseRaw PPG, IBI, HR, and HRV all exportableCustom triggers, alerts, and notifications	24/7 optical HR in the consumer product. Public Cloud API returns 5-minute BPM samples on /v2/usercollection/heartrate, plus overnight HR arrays on the sleep object, as of 2026-10-28
Heart rate variability	Captured whenever enough IBIs are valid: good signal quality, low motionSampled every 2 minutes through the night, during the day when available, and on spot checkCustom triggers, alerts, and notifications	Average HRV and an overnight HRV sample array on the sleep object. Beat-to-beat IBI is not listed on the public Cloud API v2 docs as of 2026-10-28
Respiratory rate	Derived from raw IBICaptured whenever enough IBIs are valid: good signal quality, low motionCustom triggers, alerts, and notifications	Average breath on the sleep object; green/IR PPG is described as measuring respiration rate during sleep on product pages. A continuous daytime series is not listed as of 2026-10-28
Activity tracking	Raw accelerometer and gyroscopeSteps, sleep and activity classification, calories, movement minutesActivity score with custom triggers, alerts, and notifications	Daily activity summaries with MET-minute activity levels, plus workout documents for auto-detected and user-entered sessions, as of 2026-10-28
Sleep tracking	Continuous multi-sensor sleep detectionStages: REM, deep, light, and awakeSleep score, duration, recommendations, and circadian scorePartner-defined classification validated against PSGCustom triggers, alerts, and notifications	Daily sleep score plus sleep-session objects with stage durations and sleep_phase_5_min. Sleep data may require the member to open the Oura app before it syncs, as of 2026-10-28
Temperature tracking	Continuous skin temperature, 24/7 at per-minute resolutionCaptures skin temperature deviationSkin temperature is not core temperature	Temperature deviation and trend deviation on daily readiness. Product pages list a digital temperature sensor for skin-temperature variations. A continuous sample-series export is not listed on the public Cloud API v2 docs as of 2026-10-28
ECG	Single-lead ECG capability, coming soon30 seconds or longer, user-initiatedTriggered in the app or by touching the side finger electrode	Not listed on Oura Ring 4 product or Cloud API v2 docs as of 2026-10-28
Heart rate recovery	Available from raw data	Not listed on the public Cloud API v2 docs as of 2026-10-28
Stress and autonomic balance	Parasympathetic and sympathetic balance plus stress index, available on spot check	Daily stress and daily resilience routes are documented on the public Cloud API v2 as of 2026-10-28. Daytime Stress is listed on product pages.
Cadence and gait	Yes, via raw data export	Not listed on the public Cloud API v2 docs as of 2026-10-28
Alerts and notifications	Custom triggers, alerts, and notifications on any metric	Fixed consumer notifications in the Oura app. Partner-defined metric triggers are not listed on the public Cloud API v2 docs as of 2026-10-28

Sensor Bio figures are sourced from the Sensor Bio V2 technical specification sheet, current as of July 2026. Sensor Bio V2 is a general wellness device: not FDA-cleared, not FDA-approved, not intended for diagnostic use. It is not intended for diagnostic use and does not imply RPM billing eligibility. Oura Ring 4 hardware figures (support.ouraring.com and ouraring.com product/blog pages) and Cloud API v2 figures (cloud.ouraring.com/v2/docs) are current as of 2026-10-28. The current store flagship is Oura Ring 5 (launched 2026-06); the hero shows Ring 4 because no official Ring 5 full-ring transparent packshot was found. “Not listed” means the fact was not found on that public surface — not that the capability does not exist.

See what a signal platform does that a wellness app cannot.

Better signal leads to better insights — and better health.