Would you like to share or control your iTunes purchases when you have children .
Then turn on Family Sharing.
Family sharing makes it easy for up to six people in your family to share each other’s iTunes, iBooks, and App Store purchases without sharing accounts.
This ideal when you have younger children.
You can then pay for family purchases with the same credit card and approve your childrens’ spending right from your device.
This article from Apple will help you set up family sharing.