CDC Milestone Tracker is an Android app developed by Centers for Disease Control and Prevention that helps parents track their child's developmental milestones from age 2 months to 5 years. The app provides easy-to-use checklists that allow parents to monitor their child's progress and identify concerns about their development. The app features interactive milestone tracker, milestone photos and videos, tips and activities, and appointments reminders.

The app has an "Add a Child" feature that enables parents to enter personalized information about their child or multiple children. The milestone tracker allows parents to track their child's development by looking for important milestones using an interactive checklist. The milestone photos and videos help parents to better identify each milestone in their own child. The app also provides tips and activities to support their child's development at every age. Additionally, the app helps parents to know when it's time to "act early" and talk with their child's doctor about developmental concerns. Lastly, the app provides a milestone summary that parents can view and share with their child's doctor and other important care providers.

Overall, CDC Milestone Tracker is an excellent app for parents who want to track their child's developmental milestones. The app is free, easy to use, and provides valuable information and tools to support their child's healthy development.