Womb sounds for newborns — the sound your baby fell asleep to for nine months

Blood rushing, a heartbeat, muffled voices. That was the soundtrack for nine months, and it is still the fastest way to calm a newborn.

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  • Womb
  • Heartbeat
  • Shush
  • Ocean
  • Pink noise
  • in the app

Why a womb sound works in the first weeks

A newborn's nervous system is still tuned to the uterus: constant motion, constant warmth, and constant sound of about 70–90 dB from the mother's blood flow and digestion. A quiet, still nursery is the unfamiliar part. Womb sounds give the fourth trimester the one input it can easily have back.

Paediatrician Harvey Karp's "5 S's" — swaddle, side, shush, swing, suck — are built on the same idea. Little Napper's womb track is a low, rhythmic whoosh with a heartbeat under it, generated so it can loop for hours without a seam.

When to use it and when to move on

Womb sounds shine from birth to about three or four months. After that many babies settle just as well to steady noise, and by a year most have moved on to rain, a fan, or nothing at all. There is no rush: keep it as long as it works, and lower the volume a little each week when you decide to wean.

FAQ

Womb sounds: questions parents ask

How loud should womb sounds be?

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Quieter than you think. Keep the phone 7 feet from the crib and the level at or below 50 dB there. The low rumble carries, so check at the crib rather than at the phone.

Is the womb sound a real recording?

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It is generated to match the frequency profile of intrauterine recordings — a low whoosh with a slow heartbeat — and mastered so it loops for hours without a click.

Can I play it all night?

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Yes. Pick All night in the timer. If you prefer, set 30 or 60 minutes with the fade-out and it will drift into silence once the baby is deeply asleep.

Womb sounds tonight, in one tap.

Free on Google Play. Works offline, plays with the screen off, fades out on the timer.

Get it on Google Play