The science of a mother's voice

A child's brain lights up at Mom's voice.

Stanford University · PNAS, 2016

That's why MomStory reads your child's bedtime stories in your own voice.

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Free forever: library stories to read, plus 3 stories in your voice.

Queen's University · 2003

Before birth, a baby's heart rate rose to Mom's recorded voice — and fell to a stranger's.

See all 6 studies

Six studies of a mother's voice

These are studies of real mothers' voices, live or recorded — not studies of MomStory.

  1. Queen's University · 2003

    Known before birth

    60 babies at the end of pregnancy heard a recording of their mother or a stranger reading. Heart rates rose to Mom's voice and fell to the stranger's.

    Kisilevsky et al. · Psychological Science
  2. University of North Carolina at Greensboro · 1980

    Preferred from the first days

    Newborns under 3 days old learned to suck in a way that played their mother's voice — and chose it more often than another woman's.

    DeCasper & Fifer · Science
  3. Harvard Medical School · 2015

    A larger hearing area in preemies

    40 babies born very early heard recordings of their mother's voice and heartbeat. A month later, their auditory cortex was larger than in babies who heard only hospital sounds.

    Webb et al. · PNAS
  4. University of Geneva · 2021

    Lower pain scores during a procedure

    20 premature babies showed lower pain scores and more oxytocin while their mother spoke to them live during a painful procedure.

    Filippa et al. · Scientific Reports
  5. University of Wisconsin–Madison · 2010

    Comfort, almost like a hug

    After a stressful speech and math test, girls aged 7–12 who talked to Mom on the phone had nearly the same oxytocin and cortisol response as girls comforted in person.

    Seltzer, Ziegler & Pollak · Proc. R. Soc. B
  6. Stanford University · 2016

    A child's brain lights up

    In 24 children, clips of their mother's voice under a second long stirred more brain activity — in reward, emotion and face areas — than other women's voices.

    Abrams et al. · PNAS

Six kinds of stories

Calms your child. Helps your little one grow.

  • To calm
  • Fearsthe dark, the doctor
  • Emotionsanger, sadness
  • Situationsdaycare, a new sibling
  • To grow
  • Habitsbrushing teeth, veggies
  • Charactersharing, honesty
  • Valuesfriendship, kindness
University of Wisconsin–Madison · 2010
Just hearing Mom on the phone calmed stressed girls' hormones almost like a hug.

How it works

Three steps to your voice at bedtime.

  1. Record your voice
  2. Pick one of 365 stories or describe your own
  3. Hear it in your voice

Filmed by parents

Watch them hear Mom's voice. Or Dad's.

Parents on TikTok film their child listening to a bedtime story in Mom's or Dad's voice. Tap a video to watch it right here.

Every parent here has a code. Enter it once in the Promo code field when you choose Gold in the app: your first month of Gold is 44% off, just $8.29, for new Gold subscribers.

    Plans

    Free forever. Gold when you want more.

    Free

    $0forever
    • Every library story, to read aloud yourself
    • 3 stories in your voice
    • 1 voice

    Gold

    $14.99/ month

    or $99.99 a year — $8.33 a month

    • 30 stories in your voice every month
    • Up to 5 voices — Mom, Dad, Grandma
    • Cancel anytime in the App Store

    Your voice for your child. Time for you.

    Your little one hears you read a story — while you take a moment for yourself.

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    Video

    First month of Gold 44% off — just $8.29 for new Gold subscribers. Enter the code once in the Promo code field when you choose Gold in the app.

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