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Your health data stays on your device

5 MIN READ · VITRA HEALTH

Most health apps quietly ship your most personal data to their servers to “analyse” it. Vitra was built the other way round: your health data lives on your machine, and the analysis comes to it — never the reverse.

Local-first, not cloud-first

When Vitra reads your Oura data, it stores it in a local database on your Mac or PC. Your sleep, HRV, heart rate and everything else stay there. There's no account to create and no health profile sitting on a company server waiting to be breached, sold, or subpoenaed.

The "AI" is research, not a chatbot

Vitra's insights come from a research-backed rule set, rolling 60–180-day baselines, and a correlation engine — all running on your device. Nothing about your body is ever sent to a remote AI to generate a sentence. Plain-language reads, computed locally, with the studies cited on the methodology page.

Why that matters for the reads themselves

On-device isn't only about privacy — it's why the app keeps working offline, and why every insight is measured against your baseline rather than a generic average. Your data never leaves, so it can be used fully: your normal range, your trends, your patterns.

The one thing we do hold — and how to erase it

To sell a licence we keep the bare minimum on our server: your licence email and, for trials, an email and IP. That's it — no health data, ever. A one-click erasure request removes what little we hold, and the privacy policy states plainly what is and isn't stored.

Sharing is opt-in and end-to-end encrypted

If you choose to share with a coach through Vitra Coach, that channel is end-to-end encrypted — sealed to the coach's key on your device, so our server only ever sees ciphertext. You decide exactly which metrics flow, and you can stop any time.

Own it once

Vitra is a one-time purchase, not a subscription. No recurring bill, no incentive to hoard your data to keep you paying — you buy the app and own it, and your data stays yours.

This is general educational information, not medical advice.

Frequently asked questions

Does Vitra send my Oura data to the cloud?
No. Your health data is stored in a local database on your Mac or PC and analysed there. No biometric data is sent to Vitra's servers or to any AI service. The app even keeps working offline.
Does Vitra use a large language model?
No. The insights come from a research-backed rule set, your rolling personal baselines, and a correlation engine — all computed on your device. Nothing about your body is sent to a remote model to produce its plain-language reads.
What does Vitra store on its servers, then?
Only what's needed to sell a licence: your licence email, and for trials an email and IP address. No health data. You can erase what little is held with a one-click request, and the privacy policy spells it out.
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Local AI on your Mac or PC. One-time purchase, 7-day trial, no subscription.

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See also
Using Oura without a subscriptionSharing Oura data with a coachThe research behind VitraAll posts