Sleep Stats Get the app

EST. 2025 · A SLEEP OBSERVATORY

Read the quiet hours of your body.

Sleep Stats turns your Apple Watch data into one beautiful instrument panel — sleep score, recovery, strain, and a bedtime that fits the day you just had.

Download on theApp Store See the instruments
Health data
stays on device
Works with
Watch · Widgets · Complications
Free to try
premium unlocks it all
Sleep Stats on iPhone — the Tonight dashboard: a crescent-moon sleep score of 92, last night 7h 20m, with recovery and strain rings
Sleep Stats on Apple Watch — a crescent-moon sleep score of 92 and last night 7h 20m

PART I · THE INSTRUMENTS

Six readings.
One quiet picture of your night.

Each metric is a small instrument. None of them shout. Together they tell you whether tonight's sleep actually paid the bill.

  1. 01

    Sleep Score

    A moonlit rating from 0 to 100, weighted on duration, depth, continuity, and the breath you took through the night.

    • 95+ Elite
    • 90 Great
    • 85 Good
    • 80 Fair
    • <80 Needs work
    92 GREAT
  2. 02

    Body Battery

    Reads your heart-rate variability across the day and charts how much capacity you have left in the tank. A live voltmeter for your nervous system.

    • Peak ready
    • Moderate
    • Light only
    • Recover
    10p 2a 8a now
    68% moderate activity recommended
  3. 03

    Recovery

    Last night's HRV and resting heart-rate against your own baseline. The number that tells you whether to push, hold, or step back today.

    74% GOOD
  4. 04

    Strain

    How hard your day actually was on your cardiovascular system — calibrated to your fitness, not someone else's benchmark.

    13.0 IN TARGET
  5. 05

    Smart Bedtime

    Tonight's target sleep, adjusted for the debt you've accumulated and the calories you burned. Bedtime that thinks for you.

    ☾ 10:48 PM → 6:30 AM ☀
    + 22 min extra rest
  6. 06

    Vitals overnight

    Resting heart rate, HRV, respiratory rate, and the dip from your daytime baseline — quietly recorded while you sleep.

    RHR
    54 bpm
    HRV
    62 ms
    Resp.
    14.2 br/min

PART II · THE NIGHT, PLOTTED

Polysomnography
for the rest of us.

Awake, REM, core, and deep — laid out the way a sleep lab would read them, but small enough to fit in your morning coffee.

AWAKE REM CORE DEEP
AWAKE
REM
CORE
DEEP
10p11p12a1a2a3a4a5a6a7a
10:32 PM → 6:14 AM · 7h 42m total · 4 brief awakenings

PART III · TONIGHT'S TARGET

A bedtime that thinks
about the day you just had.

Your sleep debt, your training load, your usual wake time — folded together into a single recommendation. No more rough guesses at 11:47 PM.

8h 22m +22m EXTRA REST

Tonight's target sleep, based on your patterns

☾
10:48 PM
BEDTIME
☀
7:10 AM
WAKE
Base need8h 00m
Sleep debt+ 14m
Activity (+412 kcal)+ 8m
Tonight8h 22m

PART IV · WHERE YOUR DATA SLEEPS

Your health data never leaves your phone.

Sleep Stats reads directly from Apple's HealthKit and does its math on your device. There is no cloud, no account, no analytics following you home. We sell an app, not your nights.

  • ✓ Reads HealthKit locally — nothing uploaded
  • ✓ No tracking pixels, no third-party analytics
  • ✓ Export your data any time, in plain CSV

Read the full privacy policy

Sleep better
tonight.

Free to try · Premium unlocks the full observatory · iOS 18 and watchOS 10

Download on theApp Store

"Better sleep, better life."