CDC’s Milestone Tracker App [cdc.gov]
Milestones matter! 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! Track your child’s milestones from age two 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.