Milestones matter! Track your child’s development progress 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! Download the app for free on your iOS or Android device in English or Spanish - search for "CDC's Milestone Tracker" in your app store. This app is available at no charge and contains NO in-app purchases.