# Nina: Lullabies & Womb Sounds — Science-inspired baby sleep > Neural audio sleep tool for infants 0-12 months, mimicking womb sounds. (iPhone/iPad app by ANTONIO CARDOSO DE MELO NETO.) - Source: https://appshunter.io/ios/app/nina-lullabies-and-womb-sounds/id6756974420 (this page in markdown: same URL + `.md`) - Developer: [ANTONIO CARDOSO DE MELO NETO](https://appshunter.io/developer/1863968157) - Category: Health & Fitness, Music - Price: Free with in-app purchases (on sale, was $2.99) - Rating: 5.00/5 from 4 App Store ratings · 3 written reviews indexed - Age rating: 4+ - Requires: iOS 15.1 · 175 MB - Languages: American English - Released: 2026-02-09 - Data updated: 2026-09-06 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/nina-lullabies-and-womb-sounds/id6756974420/reviews.md ## What is Nina? NINA — LULLABIES AND WOMB SOUNDS FOR IMPROVED BABY SLEEP Nina helps babies from 0 to 12 months settle and stay asleep, with gentle lullabies and continuous sound environments inspired by the rhythm and safety of the womb. TRY IT FREE Two tracks are permanently free — no account, no trial, no card. Press play the moment the app opens and hear exactly what Nina sounds like, before deciding anything. WHY LULLABIES Lullabies calm infants (and parents), and the research is absolutely clear about it. In a study of 144 infants published in Nature Human Behaviour (Bainbridge et al., 2021), babies relaxed to lullabies - even from cultures they had never encountered. Heart rate fell, pupils narrowed, and skin-conductance measures showed reduced excitement. The songs were unfamiliar and foreign, which suggests infants respond to acoustic qualities shared by lullabies everywhere, not only to songs they already know. The effect held over 12 months of regularly listening to lullabies. EEG work has also traced that response into the brain sensitivity: seven-month olds tracked their mothers' singing more closely for lullabies than for livelier songs, with the acoustic qualities of the singing shaping the neural response (Nguyen et al., Developmental Cognitive Neuroscience, 2023). Nina is built to those shared qualities: slow tempo, steady rhythm, soft low tones and no sudden changes in volume. WHAT'S INSIDE • 36 tracks across four moods: Calm & Relax, Deep Sleep, Womb Sounds, and Bedtime Routine • Womb-inspired rhythms: the steady, enveloping sound babies know from before their birth • Gapless looping: tracks flow seamlessly for as long as your baby needs, with no pause that break a light sleep phase • Sleep timer: 15, 30, or 60 minutes, ending in a slow one-minute fade rather than an abrupt stop • Plays with the screen off and in the background, all night if needed HOW NINA IS MADE Nina's music is enhanced with AI under human direction: using slow tempos, tracks that sit at a natural and calming 60 beats per minute, close to the resting heartbeat a baby hears in the womb, soft low tones, no sudden changes in volume, and none of the bright, brittle highs encountered with other white noise/sound machine/apps. FOR YOU - THE PARENT - TO ALSO RELAX Research on lullabies in infant care also applies to parents: the music lowered the parents' stress, anxiety and frustration levels (Loewy et al., Pediatrics, 2013). Nina is for the person holding the baby at 3am as much as for the baby. MADE FOR NURSERIES • No ads, ever • No account, no sign-up needed, no baby data collected • Audio is stored on the device and plays without an internet connection • Simple design to work one-handed in the dark SUBSCRIPTION Nina Pro unlocks all 36 tracks. Two simple options: • Monthly — $0.99 • Yearly — $9.99 Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Manage your subscription and turn off auto-renewal in your Account Settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://ninaap.com/privacy ## Key features - Neural Audio Optimization - Womb-mimicking rhythms - Seamless, gapless loops - Pediatric-inspired research - Zero data tracking - Offline functionality ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Nina Premium Monthly. | $6.99 | per month | | Nina Premium Yearly. | $69.99 | per year | ## Recent user reviews (3 of 3) All indexed reviews: https://appshunter.io/ios/app/nina-lullabies-and-womb-sounds/id6756974420/reviews.md ### 5/5 — Works perfectly *2026-09-03* I have been using Nina for a few weeks. It has made our bedtime routine so much easier. The lullabies and soothing sounds are calming and gentle, and I love how simple the app is to use. It helps create a peaceful environment without making bedtime feel complicated. Definitely worth trying if you have a baby who needs a little extra help settling down and relaxing. ### 5/5 — So calming and easy to use *2026-09-03* I love how calming and soothing the sounds are! There’s a really nice variety, and the app is super simple to use, especially when you’re just trying to get a little one settled down for sleep. The womb sounds are such a nice touch too. Definitely worth trying if you’re looking for something peaceful to add to a bedtime routine! ### 5/5 — Absolutely wonderful! *2026-02-10* Nina Lullabies is a truly beautiful app. The sounds are gentle, soothing, and help create a calm and comforting environment for babies. You can feel the care and love put into every detail, from the music to the overall experience. It has become part of our bedtime routine and made a real difference. Highly recommended for every family ## Frequently asked questions about Nina ### What is Nina's primary function? Nina is designed to help babies aged 0 to 12 months achieve deeper, more consistent rest. It uses Neural Audio Optimization to create sound environments that mimic the rhythms and safety of the womb. ### How does Nina's sound technology differ from standard white noise? Unlike standard white noise, Nina employs Neural Audio Optimization to generate seamless, rhythmic environments. This precision ensures there are no disruptive gaps or sudden changes that could startle a sleeping infant. ### Does Nina collect any data about my baby? No, Nina has a strong privacy promise. It does not record audio or collect any data about your baby, ensuring a secure and private experience for your family. ### Can I use Nina without an internet connection? Yes, Nina is offline friendly. It works without an internet connection, allowing you to maintain a tech-light nursery environment and ensure continuous sleep support. ### What are the subscription options for Nina Premium? Nina Premium offers two auto-renewing subscription options: a monthly plan for $2.99 and a yearly plan for $29.99. Both plans include a 7-day free trial. ### How do I manage my Nina subscription? You can manage your subscription and turn off auto-renewal at least 24 hours before the end of the current period. This can be done through your Account Settings on your device. ### Is Nina safe for my baby's developing ears? Yes, Nina's sounds are engineered to be safe for developing ears. They are designed to avoid high-frequency digital fatigue and are inspired by pediatric research on sound therapy and newborn sensory growth. ### What is the age range for Nina? Nina is designed to support calm, continuous sleep for babies from 0 to 12 months of age. ## Version history (last 3 releases) ### 2.0 — 2026-09-03 Two songs are now free - no subscription needed. FREE TO TRY "Everything Is Good" and "Mommy's Song" now play without a subscription, for as long as your baby needs them. No account, no trial, no card. Open the app and press play. ELEVEN NEW TRACKS The library grows from 25 to 36 songs across all four moods. Among them: "Whispered Goodnight" in Deep Sleep, "First Heartbeat" in Womb Sounds, "Quiet Hours" and "Drifting Off" in Calm & Relax, and "Good Morning" for the end of a nap. ALSO IN THIS UPDATE • A tidier, more consistent track list • Playback and stability fixes Sweet dreams. ### 1.2.2 — 2026-02-18 Complete UI redesign with a refreshed look and improved readability across the app. New Mood navigation with four dedicated moods: Calm Repose (Deep Sleep) Womb Routine More consistent playback experience Audio continues playing smoothly when switching moods. Play/Pause state stays in sync across all mood screens. You can stop the currently playing track from any mood. Now Playing improvements The main title area now shows the currently playing track name. If nothing is playing, it displays “Nina babies lullabies.” Sleep Timer improvements The moon timer selection is now synchronized across moods. The timer continues correctly even when switching between mood tabs. Minor Improvements Mood buttons updated to be clearer and more button-like, with improved active-state highlighting. General stability improvements around audio and navigation. ### 1.1.9 — 2026-02-09 No release notes. ## Related topics [baby sleep app](https://appshunter.io/ios/topics/baby-sleep-app) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-06.*