Dodo: Baby Sleep & White Noise

Free baby sleep app. Baby sleep sounds, white noise, womb sounds, rain sounds, ocean sounds & more. Sleep timer. No ads, no subscription. Designed for tired parents.

Dodo is a free baby sleep app that does one thing perfectly: plays calming sounds so your baby falls asleep faster and stays asleep longer. No ads. No subscription. No account required. Just tap and play.

Whether you need white noise for your newborn, womb sounds to soothe a colicky baby, brown noise for deep sleep, or gentle rain sounds for naptime, Dodo has 8 baby sleep sounds, a smart sleep timer, and built-in sound filters.

8 BABY SLEEP SOUNDS

Every sound is synthesized in real time on your device. No audio files, no internet needed, no loop seams. Just smooth, continuous, calming sound.

White Noise - a gentle, steady hush that masks household sounds. The most popular sleep sound for newborns and infants worldwide.

Womb Sound - recreates the warm, rhythmic heartbeat your baby heard for 9 months. Clinically associated with faster sleep onset in newborns.

Brown Noise - deep, warm, and rumbling. The internet's favorite sleep sound for babies and adults. Perfect for a cocoon-like sleep environment.

Pink Noise - softer and dreamier than white noise, like a gentle waterfall. Recommended for improving sleep quality in infants and toddlers.

Green Noise - nature-inspired calm with a forest-like quality. Mid-frequency warmth that many babies find deeply soothing.

Rain Sound - a cozy rainy night with soft droplet textures. Creates a natural calming atmosphere that helps babies drift off to sleep.

Ocean Sound - slow, deep wave swells that rise and fall like breathing. Encourages longer, deeper sleep for babies and toddlers.

Box Fan Sound - the classic low hum of a bedroom fan. One of the most effective white noise alternatives for baby sleep.

SMART SLEEP TIMER Set a sleep timer for 15 minutes, 30 minutes, 1 hour, or 2 hours. When the timer ends, the sound fades out gently over 9 seconds so your baby will not notice. No sudden silence. Choose continuous playback for all-night use.

SOUND FILTERS Built-in audio filters for iPhone and iPad speakers. Small speakers can sound harsh. Dodo sound filters fix that.

Off - pure unfiltered sound Calm - removes harsh frequencies for a smoother warmer tone Sleep - deep warm filtering optimized for overnight baby sleep sessions

BACKGROUND PLAYBACK Start Dodo, lock your phone, put it down. Sound keeps playing. Works with AirPlay, Bluetooth, AirPods, HomePod, and CarPlay.

WHY PARENTS CHOOSE DODO Free baby sleep sounds with no hidden fees No ads ever No subscription, every feature free forever No account, no email, no sign-up needed No data collected, no tracking, complete privacy No internet required, works anywhere Tiny app, all sounds generated on-device Loudness balanced across all sounds Dark mode designed for nighttime nursery use Works on all iPhone sizes, iPad, and landscape

THE SCIENCE Background noise helps babies transition between sleep cycles without waking. Brown noise and pink noise offer deeper frequency profiles many find more soothing. Dodo sound filters use psychoacoustic EQ to reduce harshness on small speakers through overnight sessions.

DODO MEANS SLEEP In French, faire dodo is what parents say at bedtime: time to go to sleep. One tap. One sound. One sleeping baby.

Free. Private. Calm. Made for tired parents, with love.