# Baby Tracker & Sleep: Willo — Newborn Naps & Wake Windows > Baby tracker and parenting companion for understanding development and improving sleep. (iPhone/iPad app by Sonora Labs LLC.) - Source: https://appshunter.io/ios/app/baby-tracker-and-sleep-willo/id6748524082 (this page in markdown: same URL + `.md`) - Developer: [Sonora Labs LLC](https://appshunter.io/developer/1826060591) - Category: Health & Fitness, Lifestyle - Price: Free with in-app purchases - Rating: 4.90/5 from 393 App Store ratings · 6 written reviews indexed - Age rating: 4+ - Requires: iOS 15.1 · 114 MB - Languages: American English - Released: 2025-08-05 - Data updated: 2026-08-28 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/baby-tracker-and-sleep-willo/id6748524082/reviews.md ## What is Baby Tracker & Sleep? You're doing better than you think. Willo is the baby tracker and parenting app made for tired moms, dads, and caregivers who want calmer days, better baby sleep, and more confidence in early parenthood. Built for newborns through age 6, Willo turns the chaos of baby development into something you can actually understand. 35 Developmental Phases, Not a Mystery: Willo maps your baby's first six years into 35 named developmental phases. Each one explains what is happening in your baby's brain, body, sleep, and mood, so you can stop guessing why things changed overnight. Ahead of every sleep regression, fussy week, and growth spurt, Willo gives you a heads up and a plan. A Baby Tracker That Actually Gets It: Log moods, track bedtime routines, celebrate milestones, and watch your baby's journey unfold on a personalized daily home screen. Willo is the baby milestone tracker and baby development tracker parents keep coming back to, because it speaks to how you feel, not just what your baby did. Willo AI: Your 24/7 Parenting Assistant: Ask anything, any time of night. Willo AI is an always on parenting assistant that gives warm, science based answers about baby sleep, feeding, milestones, mood, and your own wellbeing. No more 3am Googling. No more spiraling. Just one trusted place to turn. Sleep Sound Library for Better Baby Sleep: Calming white noise, pink noise, womb sounds, lullabies, ocean waves, and gentle frequencies designed to help your baby fall asleep faster and stay asleep longer. A simple baby sleep sounds app built into a full parenting companion. Bite Sized Parenting Guidance: Short, clear daily tips matched to your baby's age and current phase. Covering sleep, new skills, emotional changes, feeding, play, and what your baby may be learning right now. No long articles, no confusing advice, just the support you need in the moment. The Memory Book: One Photo A Day: The new Today tab turns every day into a keepsake. Snap one photo of your baby, add a sentence if you want, and Willo automatically stamps it with the age, phase, and any milestone you logged that day. Scroll back in a year and watch your baby grow through every phase, every little face, every tiny change you were too tired to remember. Your photos stay on your device. Never uploaded, never shared, yours forever. Mood Journal for Baby and You: Log how your baby feels, spot patterns in the calendar view, and notice the quiet wins. Willo helps you see your baby, and yourself, more clearly. A Village That Gets You: Real moms, real posts, real honesty. The in app community is where you can share the highs, the hard nights, and everything in between. Made for Parents, Not Babies: Willo is not a toy. It is a calm, thoughtfully designed companion for the parent behind every little person. Whether you are a first time mom navigating the newborn phase, a dad running on two hours of sleep, or a caregiver looking for peace of mind, Willo brings clarity, calm, and connection to your day. Install Willo and see how much lighter parenting can feel when you finally have a guide. Whether you have 5 minutes or 5 seconds, Willo meets you where you are. Subscription Required: Willo offers a free onboarding flow to help you get started. Access to all premium features, including the Baby Tracker, Sleep Sound Library, Parenting Guidance, Willo AI, and Community requires a subscription. Disclaimer: Willo is not a medical device and does not offer medical advice, diagnosis, or treatment. Content is for informational purposes only and should not replace professional guidance. Always consult your pediatrician regarding your baby's health or development. Need help? Email: help@meetwillo.app Support: https://meetwillo.app/support Terms of Use: https://meetwillo.app/terms Privacy Policy: https://meetwillo.app/privacy/ ## Key features - 35 developmental phases explained - AI parenting assistant - Sleep sound library - Daily memory book - Mood journaling - Parent community - Bite-sized parenting tips ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Willo Weekly | $7.99 | per 7 days | | Willo Yearly | $59.99 | per year | | Willo Monthly | $13.99 | per month | | Willo Monthly | $17.99 | per month | | Willo Yearly | $39.99 | per year | | Willo Yearly | $34.99 | per year | | Willo Yearly | $49.99 | per year | | Willo Monthly | $14.99 | per month | | Willo Monthly | $9.99 | per month | | Willo Yearly | $29.99 | per year | | Willo Yearly | $59.99 | per year | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Willo Assistant Unlimited | $37.00 | one-time | ## Recent user reviews (6 of 6) All indexed reviews: https://appshunter.io/ios/app/baby-tracker-and-sleep-willo/id6748524082/reviews.md ### 1/5 — Doesn’t follow your baby’s age *2026-08-15* So disappointed in this. I paid for a year subscription and it does not follow my baby’s age so I can’t even follow along on my baby’s current age. I have emailed twice about it with no responses ### 1/5 — Not worth it. *2026-07-22* Not worth the hassle. You sign up and answer so many questions and have a membership plan that you have to buy in order to use the app. ### 1/5 — Free App but Need Membership *2026-06-10* This is a free app for you to enter your name, child’s name, and child’s birthday, just to be hit with a membership pay wall. ### 5/5 — Great support *2026-05-07, version 2.0.2* Thanks for your quick response to my review, have updated the app and re-logged in, the new version of the app is great and much improved from the first version. A very handy resource to have and great support from the developers 😊 ### 5/5 — I love Willo *2026-01-17* Omg I am in love with this app thank you all **Developer response:** Thank you, its an early version but we are working day and night to make it the best tool for new parents. The next updates will make it even better. If you have any problems or suggestion please reach out via email at any time, we carefully look at all feedback positive or negative to improve the app for moms and new parents. ### 5/5 — The perfect app *2026-01-14, version 1.1* I have just downloaded the app and been using it for serval days and I have found it’s been the best app to track my babies progress. ## Frequently asked questions about Baby Tracker & Sleep ### What is Willo's primary function? Willo is a baby tracker and parenting app designed to help parents understand their baby's development, improve sleep, and gain confidence. It maps developmental phases, tracks moods and milestones, and offers AI-powered guidance. ### How does Willo help with baby sleep? Willo includes a sleep sound library with various calming sounds like white noise and lullabies to help babies fall asleep faster and stay asleep longer. It also provides insights into sleep regressions and offers guidance on sleep routines. ### What kind of parenting advice does Willo offer? Willo provides bite-sized, science-based parenting guidance matched to your baby's age and current developmental phase. The AI assistant can answer questions about sleep, feeding, milestones, mood, and caregiver well-being. ### Is Willo suitable for all stages of early childhood? Yes, Willo is built for newborns through age 6, mapping the first six years into 35 distinct developmental phases to help parents understand their child's changing needs. ### How does Willo's Memory Book feature work? The Memory Book feature, located in the 'Today' tab, allows you to take one photo a day of your baby and add a short note. Willo automatically stamps it with the baby's age, phase, and any logged milestones, creating a digital keepsake. ### What are the subscription options for Willo? Willo offers several subscription plans including weekly and monthly options, with some monthly plans providing a 3-day free trial. Pricing varies, with options like $7.99/P7D, $9.99/P1M, $13.99/P1M, $14.99/P1M, and $17.99/P1M. ### Does Willo have ads? No, Willo does not contain advertisements, allowing for an uninterrupted user experience focused on parenting support. ### What devices is Willo available on? Willo is available on iPhone and iPod devices, supporting parents on the go. ## Version history (last 5 releases) ### 2.0.7 — 2026-08-26 Bug fixes and performance improvements. ### 2.0.6 — 2026-05-25 Bug fixes and performance improvements. ### v2.0.5 — 2026-05-15 Performance improvements and bug fixes. ### 2.0.4 — 2026-05-12 Bug fixes and improvements. ### 2.0.3 — 2026-05-10 Bug fixes and improvements. ## Related topics [easy baby routine](https://appshunter.io/ios/topics/easy-baby-routine) --- *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 2026-08-28.*