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Milestones matter! Track your child’s milestones from age 2 months to 5 years with CDC’s easy-to-use illustrated checklists; get tips from CDC for encouraging your child’s development; and find out what to do if you are ever concerned about how your child is developing.

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!

· Add a Child -- enter personalized information about your child or multiple children
· Milestone Tracker -- track your child’s developmental progress by looking for important milestones using an interactive, illustrated 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 Results – 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 app was developed by the Centers for Disease Control and Prevention’s “Learn the Signs. Act Early.” program with contribution from Dr. Rosa Arriaga and students from the Computing for Good program at the Georgia Institute of Technology, Atlanta, GA.

The use of this app is not a substitute for the use of validated, standardized developmental screening tools as recommended by the American Academy of Pediatrics.

CDC does not collect or share any personal information that can be used to identify you or your child.

What’s New

Version 1.1.87

Bug fixes

Ratings and Reviews

4.4 out of 5
77 Ratings

77 Ratings

wendy red mac ,


I love this app. Wonderful videos for families to understand each question. I encourage my clients to download and use. However, several families have noted when they enter their child’s date of birth, it incorrectly gives them the month. A child born in September who is currently 8mo is showing 6 months in the app. She and I both entered info several times to no avail. This has happened with several families.

Developer Response ,

Thank you for your valuable feedback and for encouraging your clients to use it! We have recently released an updated version of the app that clarifies why the checklist age and your child’s actual age might not always match.

Milestone Tracker has checklists for the following ages (2-, 4-, 6-, 9-, 12-, 18- months and 2, 3, 4, 5 years). If your child is between the ages of available checklists, you will receive the checklist for the younger age. We hope you’ll update to the latest version and give it another try. If you have additional questions or feedback, feel free to contact us at ActEarly@cdc.gov. Thanks again!

Hdbdksbd ,

Nice idea poorly executed

As a mother of an infant, and as a family doctor, I like the concept of this app. However, in doctor language, the sensitivity of this app is too high and the specificity is too low. If a child is missing any of approximately 10 milestones at each age point, the app labels them as missing milestones and recurrently urges the parent to bring them in for evaluation. My typically developing infant has been labeled as missing milestones at each age cut off, and I suspect 90% of children would. Fortunately, as a doctor, I’m able to recognize that this is a failing of the app, rather than a failing of my child, but a mother without as much medical knowledge could be truly alarmed. It would be far more useful if it used a higher cut off for labeling a child as missing milestones, such as if a child missed multiple milestones at one age group, or was missing milestones of a younger age group. As it is, I would not recommend this to parents. The only reason I gave it two stars instead of one is that it is interesting to see what approximately your child should be learning at their age, as long as you know enough not worry if they are missing one or two skills.

Developer Response ,

Thank you for reviewing the app. We appreciate your comments and value the role healthcare providers play in helping children develop to their fullest potential. To help identify the one in six children with a developmental delay, the American Academy of Pediatrics recommends both developmental surveillance (monitoring) and screening as early as possible. The earlier developmental concerns are identified, the sooner children can connect with services and support, like early intervention, to help their development. Unfortunately, it is estimated that only 10% of eligible children receive early intervention services by age 2, and many children with delays and disabilities are not identified before kindergarten, often missing out on early services and supports. The app is intended to help parents, many of whom are not aware of typical developmental milestones, monitor their children’s development and communicate any potential concerns with their child’s healthcare provider. It is not a replacement for a standardized developmental screening tool (where sensitivity and specificity apply) but supports screening by informing parents of typical development and prompting them to contact their child’s doctor when there is a potential concern between recommended screening ages. The developmental milestones used in all of CDC’s materials, including this app, reflect milestones that most children would be expected to reach by the indicated ages. Any missing milestone should prompt a conversation with the child’s doctor and screening using a validated tool. Parents and providers working together, through regular developmental monitoring and screening as recommended, can help determine if a child’s development is on track. The app is a starting point towards helping children receive the support they may need.

For more information on CDC’s developmental milestones, their origin, and what CDC is doing to ensure they are appropriate for a surveillance (monitoring) tool, please contact ActEarly@cdc.gov.

Dilldano ,

As a pediatrician, I highly recommend this app.

This is a wonderfully useful app (particularly since it is free). The milestone checklist with photo / video descriptions and the appointment reminders are awesome. It even allows you to make notes and email / print out the milestones met and your personal notes for the doctor visit. The development and public distribution of this app is a good use of our tax dollars.

App Privacy

The developer, Centers For Disease Control and Prevention, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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