Now on iOS & watchOS

Sleep is a practice, not a score.

Nocturne reads your night from your watch and tells you one thing to change tomorrow. No streaks, no guilt.

7h 48mMedian night
4.9★18k ratings
0Ads, ever
9:41▮▮▮
Last night
Sun 26 Jan
AwakeREMLightDeep
23:1403:0007:02
Deep1h 22m
REM1h 51m
86Recovery

You slept 7h 48m.
Deep sleep was your best in nine days.

Went to bed23:14
Woke07:02
Tonight, aim for22:50
01 — What it does

Three decisions that shaped it

Most sleep apps are scoreboards. We spent two years removing everything that made the app feel like one.

Reads the night, not the numbers

Nocturne watches heart-rate variability, temperature and movement together. One reading means nothing; the shape of a night means everything.

One change at a time

Every morning it suggests exactly one thing to move, and tells you what it expects to happen. If nothing changes in nine days, it drops the idea.

Nothing to keep up

No streaks, no badges, no notification at 22:30 telling you off. Miss a week and it picks up where you left it.

02 — How it works

Three steps, then nothing

Set-up takes about ninety seconds. After that Nocturne is a notification you read once a morning.

01

Wear it

Any watch with a heart-rate sensor. Nocturne never asks you to charge something extra.

02

Sleep

No tracking mode to switch on. Nothing to remember at midnight.

03

Read one line

Not a dashboard. One sentence, over breakfast, about the night you actually had.

It stopped telling me I'd failed at sleeping.

Ren M. · App Store review · January 2026
4.9★18,204 ratings
#3Health & Fitness
92%Still using at 6 months

Your night never leaves your phone.

  • All analysis runs on device. There is no sleep server.
  • No account. No email. Nothing to breach.
  • Export or delete everything in two taps.
  • No third-party SDKs, analytics or ad identifiers.
  • Source of the sleep model published in full.
  • One price, once. No subscription.

Sleep better by
doing less.

Read the model