YouTube do have a Kids YouTube app and website I think so just use them. Should know your kids get see anything basically on the normal youtube
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
YouTube do have a Kids YouTube app and website I think so just use them. Should know your kids get see anything basically on the normal youtube