Your Oura Ring estimates overnight blood-oxygen saturation (SpO₂). The raw percentage rarely tells you much on its own — Vitra Health reads it against your personal baseline and explains, in plain English, when a dip is worth noticing. Computed locally.
SpO₂ is easy to misread: people see a number in the 90s and panic, or ignore it entirely. The signal that matters is your own stability — whether tonight tracks your normal or drops below it.
What Vitra shows
- Metric
- Overnight average blood-oxygen saturation (SpO₂ %), as recorded by your Oura Ring.
- Baseline
- Tonight plotted against your personal rolling baseline — your normal, not a population figure.
- Plain read
- A one-sentence interpretation: in line with your usual, or notably lower.
- Trend
- A view across nights so a one-off dip isn't mistaken for a pattern.
- Local
- Computed on your machine. No cloud, no account.
Calm by design
Vitra treats SpO₂ like every other signal: context first, no alarm. A single low night is usually noise; a sustained drop below your baseline is the thing to notice — and a reason to mention it to a clinician. Vitra is not a medical device and does not diagnose.
Frequently asked
What is Oura SpO₂?
SpO₂ is your blood-oxygen saturation — the percentage of oxygen your blood is carrying — measured by your Oura Ring overnight. Healthy values typically sit in the high 90s; the useful signal is your own stability night to night.
What does a low or variable SpO₂ mean?
Occasional dips are normal. Consistently lower or more variable overnight SpO₂ can reflect breathing disruption during sleep. Vitra shows your trend against your baseline so you can spot a real change — it is not a medical device or a diagnosis.
How does Vitra present SpO₂?
As your overnight average plotted against your personal baseline, with a plain-English read of whether tonight was in line or notably lower for you.
Does reading SpO₂ need an Oura subscription?
No. Vitra reads SpO₂ from your Oura account through the public Oura API. Vitra is a one-time purchase with no subscription.
Try Vitra with your Oura Ring
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