Bivryn Biological Intelligence

Your wearable knows what happened. Bivryn tells you why.

"Why do I feel off today?"

"Is coffee wrecking my sleep?"

"Did that actually help?"

Most health apps wait for you to ask. You log for a month, pick two things,

and run a correlation. Bivryn works the other way round. Every morning it

reads your Apple Health stream — sleep, HRV, recovery, blood work,

behaviour, weather — names what changed and the likely reason, and tells

you whether what you tried last time actually worked.

You shouldn't need a theory about your own body.

TODAY

One calm reading of how your biology is landing, built from sleep, HRV,

resting heart rate, recovery, respiratory rate, wrist temperature, bedtime

timing, training capacity and travel. The Arc behind it draws your last 24

hours and keeps going — a forecast line through the rest of your day. Tap

anything to see the drivers, the numbers, and what could shift.

WHY

Ask anything — why am I tired this week, what changed about my last 14

days — and Bivryn reads across your full year of biology to answer. Or ask

nothing: the morning reading already names the likely reason before you

open the app.

PATTERNS

Bivryn finds correlations across your behaviour and biology that you'd

never spot by hand, including the 1, 2 and 3-day delays where the real

signal usually lives. It also scans new health research weekly and surfaces

only findings that would change a decision about your own stack.

PROOF

Try one change at a time — a supplement, an earlier dinner, a training

protocol. Bivryn captures your baseline, tracks adherence, and tells you

honestly whether your biology actually moved.

LABS

Upload a lab PDF. Bivryn reads cholesterol, ferritin, vitamin D, hs-CRP,

glucose, thyroid and hormone markers, and connects them to your sleep,

energy and recovery.

MEMORY

When today's biology matches a day from your own history, Bivryn surfaces

what came next. Underneath sits a living timeline of travel, recovery

stretches, supplement changes and training blocks.

LONG ARC

Bivryn Bio Age: a continuous reading composed from up to nine channels,

scored against your own baselines and published healthy ranges, computed

entirely on your device. Once a quarter, a short set of physical tests

matched to your age, biology and goals.

RIGHT NOW

Five breathing techniques, mindful walks, eye rest, light reset — with the

HRV change measured before and after, so you see what actually works for

your nervous system.

WORKS WITH WHAT YOU ALREADY WEAR

Apple Watch, Oura, WHOOP, Garmin and lab panels all flow in through Apple

Health. Bivryn reads across every source you have rather than being locked

to one set of sensors.

PRIVACY BY DEFAULT

Your biology stays on your device, syncing only to your own iCloud account

if you choose. We don't sell your data or share it with advertisers. Export

everything as JSON, or delete everything, with one tap from inside the app.

Requires iOS 17 or later. Apple Watch supported but not required.

Bivryn is not a medical device. It provides informational and educational

insights about your biology and is not intended to diagnose, treat, cure or

prevent any disease. For medical concerns, consult a healthcare

professional.

SUBSCRIPTION

Bivryn Premium: 7-day free trial, then $14.99/month or $99.99/year. A

lifetime unlock is available in-app. Payment is charged to your Apple

Account at confirmation of purchase. Subscriptions renew automatically

unless auto-renew is turned off at least 24 hours before the end of the

current period; your account is charged for renewal within 24 hours of

the end of the current period. Manage or cancel in your Apple Account

settings after purchase. Any unused portion of a free trial is forfeited

when you buy a subscription.

Terms of Use (EULA):

https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Bivryn Terms of Service: https://bivryn.web.app/terms

Privacy Policy: https://bivryn.web.app/privacy