Birth To Five Development TimeLine Link download: https://play.google.com/store/apps/...1bGwsMSwxLDEwMiwiVGluZm8uQmlydGhUb0ZpdmUiXQ.. Description Birth To Five Development TimeLine This is a guide to the milestones in your child's development from birth to five years old. Use it to see when your child may gain certain skills and learn new things. The ages given are averages and a lot of childen will gain one skill earlier than another. App Screenshots Thank you.