Coming soon to iPhone and Android

Layer your own lullaby.

Sleepdalf is a sleep and relaxation app. Mix rain, forest, ocean, soft tones and ASMR into one sound that plays all night, with a sleepy little wizard to guide you.

Sleepdalf, a sleepy purple wizard holding a moon lantern, next to Lulla, who holds a glowing star

The mixer

Every night gets its own mix.

A mix is a stack of sounds playing together. Start from a ready-made one like Rainy cabin, then turn each layer up or down until it sounds like your kind of quiet.

Plays while you drift off

Seamless loops with the screen locked. Free mixes fade out softly after 15 minutes; with Plus they play until morning.

Real sounds, soft tones

Recorded rain, creeks, waves and forests, plus pink noise, 174 to 528 Hz tones and binaural beats.

Save your favourites

Keep the mix that finally worked and find it again tomorrow night.

Customize mix PLUS
Sleepdalf

Rain and a slow sea. Very cozy.

Tonight's mixRainy night by the sea
70%
45%
25%
15%
Sleep timer 45 min

Press play, then drag the sliders. The rain is a real recording; the other demo layers are made in your browser.

Your guide

Pick who tucks you in.

When you first open the app you choose your guide. They greet you in the evening, suggest a mix for tonight and doze off right along with you.

Carries the moon lantern

Sleepdalf

A drowsy old dream wizard in slippers and a starry nightcap. Yawns more than he talks, and knows exactly how much rain is the right amount of rain.

Sleepdalf in his purple starry nightcap and pyjama robe, holding a glowing moon lantern

Carries the little star

Lulla

Sleepdalf's partner, named after the lullaby. A little more playful, always holding a glowing star, and very good at gentle ASMR evenings.

Lulla in a wide purple hat with a pink ribbon, holding a smiling glowing star

Bedtime lullabies

A lullaby, read just for you.

Choose a lullaby from the shelf and your guide reads it to you, slow and soft, for about half an hour: just long enough to drift off. Underneath, play any mix you like, from rain on the window to a crackling fire. With Plus you can also set each sound's volume. Sleepdalf's voice is low and rumbly. Lulla's is warm and gentle.

  • The Moon Who Forgot to SetRead by Sleepdalf · 30 min
  • Little Star Finds Her Way HomeRead by Lulla · 28 min
  • Wynken, Blynken and NodA classic, read by Sleepdalf · 32 min
  • The Sleepy LighthouseRead by Lulla · 30 min

Six lullabies at launch, a mix of our own stories and old classics. One is free, and Plus opens the whole shelf.

Lulla dozing off, hugging her glowing little star

Free and Plus

Free to fall asleep with.

Six complete mixes are free, with 15 minutes of sound a night that fades out gently. Sleepdalf Plus plays all night and lets you shape every layer yourself.

Free

  • 6 ready-made mixes, yours to keep
  • 15 minutes of sound a night, then a slow fade-out
  • Plays with the screen locked
  • Choose Sleepdalf or Lulla as your guide
  • 1 bedtime lullaby, 15 minutes a night, picking up where you left off

Sleepdalf Plus

Free trial
  • Plays all night, until your alarm
  • Every mix in the library, with new ones added
  • Your own volume for every single layer
  • Add or remove layers and save your own mixes
  • Every lullaby on the shelf, read in full by Sleepdalf or Lulla
  • Tones, binaural beats and the full ASMR shelf
Free at launch: Rainy cabin Forest creek Ocean night Deep focus Tingle time Lullaby

Questions

Before you ask.

When does Sleepdalf launch?

We're building it now and will launch on iPhone and Android at the same time. Leave your email and you'll hear the day it's out.

Does it work with my screen off?

Yes. Mixes keep playing with the phone locked. On the free plan they fade out after 15 minutes; with Plus they can play all night.

What happens after 15 free minutes?

The sound fades out slowly, so nothing jolts you awake. The next time you open the app, your guide will offer you a free trial of Plus.

Is there an account to create?

No. You open the app and press play. Your saved mixes stay on your phone.

Sleepdalf dozing off with his lantern

Be first in line when the lights go out.

Get one email on launch day, and an invitation to try Sleepdalf early if you'd like one.