Comparison

Hatch Sleep vs CDC's Milestone Tracker

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Hatch Sleep

This app helps users of all ages achieve better sleep through a smart bedside device. It offers customizable sunrise alarms, soothing sounds, and sleep cues to establish restful routines from sunset to sunrise. Features vary by device, including portable options with backup batteries.

Highlights
  • Sunrise alarm clock
  • Soothing sleep sounds
  • Customizable routines
  • Sleep cues for children
  • Portable backup battery
  • Nightlight functionality
Read full description

Hey there. Feeling sleepy? You’ve come to the right place. We’ve helped over 4 million people (from babies to grown-ups), and we’re here to help you get the rest you need to be the best version of yourself. With the Hatch Sleep app, you can control dreamy features on all our devices: Restore, Rest, and Rest+. Restore is your bedside guide. Sleep the way nature intended with a gentle sunrise alarm and soothing sleep sounds, all rolled into one beautiful dream machine. Build your restful routine with Hatch, from sunset to sunrise. Rest is your dream machine. Made for littles. Loved by parents. From sounds to soothe your newborn to cues that teach your little kid to stay in bed until a reasonable hour, Rest is the dream machine that helps your child sleep at every age and stage. Rest+ has all the essential sleep features of Rest PLUS a backup battery. Keep your little one dreaming, wherever they fall asleep when you bring Rest+ and its up to 8 hour battery into any room. In case of a storm, keep the nightlight on even if the house lights go out Subscription pricing and terms: Hatch+ offers auto-renewing subscriptions. This will continue to give you unlimited access to content while you maintain an active subscription. Cancel anytime. Payment will be charged to the credit card connected to your App store Account. Your subscription will automatically renew and the credit card connected to your App store Account will be charged at the subscription frequency you choose unless you decide to cancel at least 24 hours prior to your renewal date. You may manage your subscription, and auto-renewal may be turned off by going to your Account Settings after the purchase. Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription, where applicable. Read more about our terms and conditions here: Terms of service: https://www.hatch.co/terms Privacy policy: https://www.hatch.co/privacy-policy Learn more about Hatch products at hatch.co. If you’re a fan of Hatch, leave us a review! Need help? Contact us with any feedback or comments at hatch.co/support.

About

CDC's Milestone Tracker

Monitor your child's developmental progress from 2 months to 5 years with interactive checklists. Includes tips, videos, and guidance on when to seek professional advice. Easily share milestone summaries with healthcare providers.

Highlights
  • Add multiple children
  • Interactive milestone checklists
  • Milestone photos and videos
  • Developmental tips and activities
  • Guidance on early developmental concerns
  • Track doctor's appointments
  • Share milestone summaries
Features
Read full description

Milestones matter! Track your child’s milestones from age 2 months to 5 years with CDC’s easy-to-use checklists; get tips from CDC to support your child’s development; and find out what to do if you ever have concerns about your child's development. From birth to age 5, your child should reach milestones in how he or she plays, learns, speaks, acts and moves. Photos and videos in this app illustrate each milestone and make tracking them for your child easy and fun! Spanish photos and videos are coming soon! Features: • Add a Child – enter personalized information about your child or multiple children • Milestone Tracker – track your child’s development by looking for important milestones using an interactive checklist • Milestone Photos and Videos – know what each milestone looks like so that you can better identify them in your own child. • Tips and Activities – support your child’s development at every age • When to Act Early – know when it’s time to “act early” and talk with your child’s doctor about developmental concerns • Appointments – keep track of your child’s doctors’ appointments and get reminders about recommended developmental screenings • Milestone Summary – get a summary of your child’s milestones to view, and share with or email to your child’s doctor and other important care providers For more information and free tools to help you track your child’s milestones, visit www.cdc.gov/ActEarly. *This milestone checklist is not a substitute for a standardized, validated developmental screening tool. These developmental milestones show what most children (75% or more) can do by each age. Subject matter experts selected these milestones based on available data and expert consensus. CDC does not collect or share any personal information that can be used to identify you or your child.

Screenshots

Hatch Sleep4 screens
CDC's Milestone Tracker4 screens

Verdict

The call

The clearest difference is review sentiment: CDC's Milestone Tracker at 62% against Hatch Sleep's 9%. CDC's Milestone Tracker also leads on in-app purchases (none vs 22) and rating (4.9 vs 4.5). Hatch Sleep's advantage is update cadence (weekly vs every 6 months) and chart position (#10 vs unranked). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Hatch Sleep sells 21 in-app purchases, starting at $2.99 per month. CDC's Milestone Tracker asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

CDC's Milestone Tracker holds the better App Store score, 4.9 against 4.5. That said, the two scores are not equally well evidenced: Hatch Sleep has 62K ratings behind it against 10K, so its average is the more settled of the two. Written reviews point the same way: 9% of Hatch Sleep's written reviews are positive against 62% of CDC's Milestone Tracker's.

UpkeepUpdate frequency

Hatch Sleep ships an update weekly, CDC's Milestone Tracker every 6 months. The most recent releases landed on October 15, 2026 and October 14, 2026 respectively.

Scorecard8 real differences · 3 level
Hatch Sleep versus CDC's Milestone Tracker: the parameters behind the verdict, then further details
ParameterHatch SleepCDC's Milestone Tracker
PriceFreeFree
Rating4.5 (62K ratings)4.9 (10K ratings) — better
Positive reviews9.1% of reviews61.7% of reviews — better
Number of ratings62K — better10K
Update frequencyWeekly — betterEvery 6 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscriptionFree — better
Best chart rank#10 — better—
DevicesiPhone, iPadiPhone, iPod
Requires iOS18.615.1 — better
Further details — not scored
Size897 MB61 MB
Age rating4+4+
DeveloperHatch Baby, Inc.Centers For Disease Control and Prevention

Customer experience

Hatch Sleep

All ratings61,950 ratings
Positive88.0%
Neutral2.4%
Negative9.6%
Written reviews1,841 reviews
Positive9.1%
Neutral15.0%
Negative75.8%

CDC's Milestone Tracker

All ratings9,979 ratings
Positive96.9%
Neutral1.5%
Negative1.6%
Written reviews107 reviews
Positive61.7%
Neutral15.0%
Negative23.4%

User reviews

Hatch Sleep

From 62K App Store ratings

What we love

  • 🌙 Gentle light and sound options
  • ⏰ Programmable routines and alarms
  • 🔌 Convenient app control
  • 🌳 Variety of natural sounds
  • 🌟 Customizable light colors

Room to improve

  • 🐌 Slow app performance and connectivity issues
  • 🔒 Restricted access to features without subscription
  • 🔁 Inconsistent and unreliable device behavior
  • 🧠 Confusing and unintuitive app interface
  • 🔇 Limited sound and music options

CDC's Milestone Tracker

From 10K App Store ratings

What we love

  • 👍 Easy to use
  • 🚀 Comprehensive milestone tracking
  • 💡 Helpful videos and activities
  • 🔍 Useful for monitoring child development
  • ⭐ Great resource for parents and caregivers

Room to improve

  • 🐛 Bugs and glitches (e.g., app crashes, incorrect age display)
  • 🔍 Overly sensitive to missing milestones, causing unnecessary worry
  • 🗣️ Needs more language options beyond English and Spanish
  • 🔗 Broken or missing links to external resources
  • 🔍 Lacks flexibility for customizing milestones (e.g., for children with special needs)

Bugs and requests

Hatch Sleep

Reported bugs

4 issues
  • Frequent app crashes and freezes
  • Unexpected device disconnections and resets
  • Inconsistent behavior of light and sound settings
  • Issues with saved routines and preferences

Requested features

5 requests
  • Ability to upload custom sounds and music
  • More granular control over light and sound settings
  • Integration with smart home platforms and voice assistants
  • Improved app responsiveness and reliability
  • Easier device management and multi-user support

CDC's Milestone Tracker

Reported bugs

4 issues
  • Incorrect age display for children
  • Milestone checklist reset after app updates
  • Reference videos not working as expected
  • Inability to input child's exact age or prematurity details

Requested features

5 requests
  • Ability to sync data between multiple devices
  • Option to track milestones beyond early childhood
  • Integration with other child health and development apps
  • More customization options for milestone tracking
  • Improved data visualization and reporting

In-app purchases

21 purchases

Hatch Sleep

Subscriptions21
  • Monthly7 Days trial$2.991 Month
  • Monthly7 Days trial$3.991 Month
  • Monthly3 Months trial$4.891 Month
Show 18 more
  • Monthly6 Months trial$4.891 Month
  • Monthly7 Days trial$4.991 Month
  • Monthly Access1 Month trial$4.991 Month
  • Monthly6 Months trial$4.991 Month
  • Monthly14 Days trial$4.991 Month
  • Monthly1 Month trial$5.991 Month
  • Monthly7 Days trial$9.991 Month
  • Monthly1 Month trial$14.991 Month
  • Yearly1 Month trial$24.991 Year
  • Yearly1 Month trial$39.991 Year
  • Yearly3 Months trial$48.991 Year
  • Yearly6 Months trial$48.991 Year
  • Annual Access1 Month trial$49.991 Year
  • Yearly6 Months trial$49.991 Year
  • Yearly1 Month trial$49.991 Year
  • Yearly2 Months trial$49.991 Year
  • Yearly1 Month trial$59.991 Year
  • Yearly1 Month trial2 variants$99.991 Year
None

CDC's Milestone Tracker

No in-app purchases

Questions

Is Hatch Sleep free?
Hatch Sleep is free to download, with in-app purchases available.
Is CDC's Milestone Tracker free?
CDC's Milestone Tracker is free to download, with no in-app purchases.
Which has better reviews, Hatch Sleep or CDC's Milestone Tracker?
CDC's Milestone Tracker is rated higher. Hatch Sleep averages 4.5 out of 5 from 62K ratings, while CDC's Milestone Tracker averages 4.9 from 10K ratings.
Do Hatch Sleep or CDC's Milestone Tracker have ads?
Neither Hatch Sleep nor CDC's Milestone Tracker shows ads.
Which is updated more often, Hatch Sleep or CDC's Milestone Tracker?
Hatch Sleep ships an update weekly, and CDC's Milestone Tracker every 6 months. Most recently, Hatch Sleep was updated on October 15, 2026 and CDC's Milestone Tracker on October 14, 2026.

Other comparisons