100% free · no account · works offline

Baby sleep sounds that fade out instead of stopping.

Heartbeat, womb, shush, white noise, rain and lullabies — 31 sounds your baby already knows, a timer that lowers the volume gently, and a recorder for your own voice. Free on Android, no subscription, no ads while a sound plays.

Browse the sounds

31: sounds, 6 categories
0: subscriptions
≤ 50 dB: AAP volume guide built in

Little Napper's Sounds screen: Heartbeat playing in the Newborn row, Womb and Shush next to it, the mini player at the bottom

The sounds

31 sounds, Newborn first

Every sound is bundled with the app and prepared for gapless looping, so there is no download, no buffering and no click at the end of the file. The Newborn row is at the top because it is the row you need at 3 a.m.

Newborn

What the womb sounded like — the three sounds newborns settle to fastest.

Heartbeat
Womb
Shush

Noise

Steady, broadband sound that masks the house.

White noise
Pink noise
Brown noise

Lullabies

Soft music boxes and piano, looped without a gap.

Twinkle (music box)
Twinkle (piano)
Gentle lullaby
Baby sleep
Silent Night
Christmas piano

Nature

Rain, ocean and the quiet outdoors.

Rain
Ocean
Waves
Waterfall
Forest
Birds
Crickets
Fire
Wind
Cat purring

Home

The hum babies already fall asleep to.

Fan
Hairdryer
Washing machine
Fridge
Air conditioning
Clock

Travel

The motion sounds that work in a car seat.

Car ride
Train
Airplane

Bedtime, in three taps

How does Little Napper work?

Tap a sound

Open the app and tap a tile. It plays at once, loops without a gap, and the mini player appears at the bottom. No account, no setup screen, no download.

Set the timer

Tap the mini player for the Now Playing screen: 15 to 90 minutes or All night. The volume fades out over the last minutes so the silence never startles.

Put the phone down

Screen off, phone on a shelf 7 feet from the crib. Playback keeps going in the background; pause and stop live on the lock screen and in the notification.

Why Little Napper

Built for the nursery, not the app store chart

Made by a parent who wanted one thing: a sound that starts in one tap, keeps playing with the screen off, and ends without waking anyone.

A timer that fades out

Most sound apps stop dead when the timer ends — and a sudden silence is itself a change a light sleeper notices. Little Napper lowers the volume over the last minutes of the timer, then restores it for next time. Pick 15, 30, 45, 60, 90 minutes or All night; the Now Playing screen shows the exact time the sound will end.

Record your voice

Your shush, your lullaby, your "it's okay". Record it once and play it like any other sound. Recordings never leave the phone.

Works offline

Every sound is built in. Airplane mode, a cabin with no signal, a nursery in the basement — it plays.

Screen off, controls on the lock screen

Playback runs as a background service that survives the screen turning off, the phone locking and Android's battery saver. Pause, play and stop from the lock screen, the notification shade or the home-screen widget — without lighting up the room. The screen can also dim itself while a sound plays.

Gapless loops, favourites, search

No click at the loop point. Heart a sound to pin it to the top of the screen; search by name when the list gets long.

Free. Actually free.

No subscription, no locked sounds, no account. A small ad supports the app and it never plays over a sleeping baby — nothing full-screen appears while a sound is playing or at night.

In the app

Designed for a dark room at 3 a.m.

Big tap targets, a calm palette and nothing that flashes. Everything you need while the baby is in your other arm.

One screen for the whole nightTimer presets, a live volume slider, loop and favourite — all on the Now Playing screen, with the exact time the sound will end.
A breathing orb, not a blinking oneThe screen is designed to be looked at in the dark: deep night surfaces, one warm accent, nothing bright.
Dark by default, light if you preferDark mode is the primary design. A light theme is one switch away in Settings.

Little Napper's Now Playing screen: the breathing orb, the timer presets and the volume slider

The Record screen: a big record button with a level meter, and the list of saved recordings

Safe volume

Three rules for baby sleep sounds

In a 2014 study in Pediatrics, 14 of 14 infant sound machines tested could exceed 50 dB at 30 cm, and three passed 85 dB — louder than heavy traffic. The device is not the problem; the volume and the distance are. These are the rules the app is designed around.

≤ 50 dB

at the crib

The American Academy of Pediatrics' guidance for infant sleep sound: no louder than 50 decibels measured where the baby sleeps — quieter than a shower. Little Napper starts at a moderate volume and remembers what you set.

7 ft

from the baby

Place the phone at least 7 feet (2 m) from the crib, never on the rail or in the cot. Sound falls off quickly with distance, which is what keeps a soothing level from becoming a loud one.

Sleep only

not all day

Use sound for naps and nights, not as constant background. Babies learn language from hearing speech clearly, and their ears need quiet hours too.

Sources: American Academy of Pediatrics, HealthyChildren.org; Hugh SC et al., "Infant Sleep Machines and Hazardous Sound Pressure Levels", Pediatrics 2014. This page is general information, not medical advice — ask your paediatrician about your own baby.

Guides by sound

Which sound does your baby need tonight?

What each sound does, when it works best, how loud to play it, and how to set it up in the app — one page per sound.

White noiseSteady, even sound that covers the doorbell, the dog and the older sibling — so a light sleeper stays asleep.Read the guide →Pink & brown noiseSame masking, less hiss.Read the guide →Womb soundsBlood rushing, a heartbeat, muffled voices.Read the guide →HeartbeatThe one rhythm your baby knew before anything else.Read the guide →ShushingEvery parent shushes on instinct.Read the guide →LullabiesSix soft lullabies — music box and piano — that loop without a seam and fade out on the timer, so the song ends without waking anyone.Read the guide →Rain soundsRain is pink noise the way nature makes it: steady, soft in the treble, and endlessly familiar.Read the guide →Sleep timer & fade-outA sound that stops dead can wake the baby it just put to sleep.Read the guide →

FAQ

Questions parents ask before installing

Short, honest answers. Each sound guide has its own FAQ for the details.

Is Little Napper really free?

Yes. All 31 sounds, the timer with fade-out, the recorder, favourites and the widget are free. There is no subscription, no trial and no account. A small ad supports the app; nothing full-screen ever appears while a sound is playing or at night.

Does it keep playing with the screen off?

Yes. Playback runs as a background service, so you can lock the phone and put it on a shelf. Pause, play and stop are on the lock screen, in the notification shade and on the home-screen widget.

How loud should baby sleep sounds be?

The American Academy of Pediatrics recommends no more than 50 dB measured at the crib, with the speaker at least 7 feet (2 m) away, and using sound for sleep rather than all day. Little Napper starts at a moderate volume and remembers your setting.

Does the timer stop the sound suddenly?

No. Over the last minutes of the timer the volume fades out gently, then the sound stops. A sudden silence can wake a light sleeper; the fade is there to avoid it. You can also choose All night.

Can I record my own voice?

Yes. The Record tab captures your own shush, lullaby or a few calming words, and the recording plays like any other sound — looped, timed and favourited. Recordings stay on your phone and are never uploaded.

Does it work offline?

Yes. Every sound is built into the app, so it works in airplane mode, in the car and anywhere without signal.

Is it on iPhone?

Little Napper is an Android app on Google Play. There is no iOS version yet.

Guides

Guides for tired parents

All guides →

Sep 15, 2026 · 3 min readShould Baby Sleep Sounds Play All Night or on a Timer?All night or on a timer? When each works, why a hard stop wakes babies, what a fade-out does, and the settings most parents end up with by age.Sep 14, 2026 · 3 min readWhite Noise vs Pink Noise vs Brown Noise for BabiesWhite noise vs pink noise vs brown noise for baby sleep: what each sounds like, what the frequency colours mean, and which one to try first for a newborn.Sep 12, 2026 · 3 min readWhen to Stop White Noise for Your Baby (and How to Wean It)When to stop white noise for a baby, what the evidence says about dependence, and a two-week weaning plan that lowers the volume a notch a night.

Tonight, in one tap.

Free on Google Play. 31 sounds, a timer that fades out, your own voice — and no subscription, ever.