How it works

From your wrist to plain words

01 · Night

While you sleep, your watch writes it down.

Heart rate variability, resting heart rate, sleep stages, wrist temperature — sampled all night, stored in Apple Health. You don’t have to do anything except wear it.

02 · Morning

Your numbers, against your baseline.

Perigee compares last night with your own recent weeks — not population averages. Every signal gets a confidence tier: solid, trend-only, or ‘not enough data yet.’ We show the tier, always.

solid trend-only not enough data yet
03 · Words

Then it becomes language.

A few honest sentences about what your body did — and one thing to do with your day. Written by AI from a strict, numbers-only summary, or fully on-device if you prefer.

Tuesday, July 7 Solid baseline · 21 nights
Gentle day

Your night ran a little warm, and your HRV dipped below your usual range. Together with the broken sleep you logged, today reads like a day to keep the schedule soft. One rough night is a data point, not a verdict.

Private by design

What leaves your device — and what never does

Sent
Only if you opt in to cloud AI

Summary stats only, like ‘overnight HRV averaged 42 ms, 15% below baseline’

Never

Your name, your identity, raw health records, anything you type

Your watch already knows. Let it speak.

Free to download · Perigee Plus with a 7-day free trial