A clearer answer
A number, or a reason?
A score asks you to trust the number. Brin shows what changed, when it changed, and the readings behind it.
Recovery: fair
Resting heart rate moved up on 14 September.
The product
From today to the long view.
Start with what changed. Follow it into the evidence, your history, and what you recorded.
Today ›
The morning sweep. What is moving, out of how many measures were checked — and what stood out that a trend would miss.
Investigate ›
Tap any number. What changed, what moved alongside, what you recorded, and what was checked and ruled out.
Trends ›
Every measurement, across the windows that matter, against your own usual range. Body composition, VO₂ max, training, eight healthspan domains.
Journal ›
Events, workouts, doses and states. The things only you can tell Brin — with titles that stay private.
Ask ›
A coach that routes your question to an engine and reads back what it found, on-device, with a link to the evidence.
How it works ›
The rule every screen obeys, the confidence vocabulary, and the twelve engines behind it.
Clear by design
No black-box verdicts.
Every conclusion starts with readings your devices actually recorded.
See the dates, values, source, coverage, and method behind a finding.
When the evidence is missing or inconclusive, Brin says exactly that.
Private by default
Your health history stays on your phone.
Works with Apple Health, WHOOP and Withings.
Brin for iPhone and iPad
See the change. Check the evidence.
A personal health record that shows its work.