Guided breathwork, voiced not narrated.
Eight paced sequences — from 4·7·8 to box breathing — layered over bone-deep ambient tones tuned to drop your heart rate.
Vol. 01 — The Night Edition
Sleep, rewritten by night.
Halcyon is a wind-down companion that composes your evening into a ritual — ambient scores, breathwork, and a sleep journal that actually listens.
(01) Features
Three practices, one ritual.
Every element of Halcyon was shaped by sleep researchers, sound designers, and a long, unhurried year of listening to the dark.
Original scores for the fade into dark.
A library of 84 generative pieces, composed by ambient artists Lia Chen and Okada Rei. Nothing looped, nothing repeated.
A journal that reads itself back.
Voice or type — Halcyon maps your sleep arc against the things you carried into bed. Patterns, not pressure.
(02) The app
A quieter interface for quieter hours.
Swipe through the night. Designed as deliberately as a good hardback.
Tonight
Ritual starts 22:304·7·8 Breath
Nightfall
Pine Forest
Soft Rain
The Rituali.
Last night
7h42m
Asleep 23:08 · Woke 06:50
22h02h04h06h
The Arcii.
Scores
Tonight's libraryNightfallLIA CHEN · 22M
Low TideOKADA REI · 34M
Blue HourLIA CHEN · 18M
The Scoreiii.
This week
Eleven quiet nights in a row.
M
T
W
T
F
S
S
Begin tonight's ritual →
The Streakiv.
Journal
Thursday, Nov 14"A long day. Back ache. Read for an hour before lights — felt the settle around the second chapter."
The Journalv.
(03) In their words
What people tell us at 3am.
A selection of unedited letters from the Halcyon inbox.
I stopped doom-scrolling the moment the first score starts. It replaced a habit I'd been fighting for two years.
Mira OkonkwoBrooklyn · Writer
Halcyon is the rarest thing — a wellness app that doesn't feel like homework.
Daniel ReyesMexico City · Designer
The journal changed how I think about my insomnia. Not as a problem to solve, but a pattern to read.
Anya LevantLisbon · Architect
It's the only thing on my phone I'm not trying to use less of.
Toma FujitaOsaka · Musician
(04) Begin
Tonight, softer.
Free to download. Halcyon Quiet — our full library — is $4.99 a month, or $39 a year. No trial walls, no notifications.