Wearables gave us numbers. Apps gave us streaks. Doctors gave us 12-minute appointments. Somewhere in there, we lost the thread — the basic ability to read what our own bodies are telling us.
Longvai is built to give that back. Not by adding another dashboard. By being the layer that finally makes sense of all of them.
The story behind Longvai is the same one a lot of people live: an Oura ring, a Whoop strap, a CGM, years of blood panels — and absolutely no idea why energy fell off a cliff by Wednesday every week.
So it began the way these things do: a spreadsheet, then a Python notebook, then a small statistical model. The breakthrough wasn't more data — it was a layer that could explain, in plain English, exactly which patterns were driving the bad weeks.
That layer is what Longvai is. Not another tracker bolted onto the pile — the thing that finally makes sense of the pile you already have.
Built for everybody who's been collecting health data for years without ever really understanding it.
An Oura ring, a CGM, years of blood panels — gigabytes of personal health data, and still no idea why energy fell off a cliff every Wednesday.
The numbers were all there. What was missing was the layer that connects them — that explains, in plain English, what actually drives how you feel.
Rank-correlation, change-point detection, n=1 trials with real controls. Population averages out; a model built on your own timeline doesn't.
Every claim tied to your baseline, every correlation shown with its confidence, every insight framed as a hypothesis to test — never a diagnosis.
You're early. Sign in with Google, connect your data, and start running experiments. The methodology only sharpens with more signal.
If your data says the supplement isn't working, we'll tell you. We don't optimize for you feeling good about your habits — we optimize for your habits actually working.
Reddit, influencers, and even most doctors are working from population-average data. You're one person. Longvai builds a model of one person: you.
We don't sell it. We don't train on it without permission. We don't hold it hostage if you leave. You export it anytime, in formats doctors and research tools actually accept.
The goal is never to show you more numbers. The goal is to show you one thing worth knowing today — and why.
We don't ship a claim because it sounds good. Every insight is checked against four disciplines before it ever reaches you — and if a correlation doesn't hold up statistically, it doesn't ship.
Longvai is a personal-insight tool, not a medical device, and does not provide medical advice or diagnosis.
Open beta — sign in with Google. No credit card. Your data, your answers.