Your health data stays on your device
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.
On this page
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
Pedro Thomaz builds Vitra, a desktop app that reads Oura data against your own baseline instead of a population average. He has worn a ring daily for years and reads these same numbers every morning — which is where most of what is written here comes from. Vitra is not a medical device and nothing on this blog is medical advice.
Local AI on your Mac or PC. One-time purchase, 7-day trial, no Vitra subscription.
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