One of the great things about Android is the ability to customize it for kids to use more safely. But if your Android device doesn't support a kids mode natively, there's a simple way you can still add that functionality -- a free launcher called "Kids Place - Parental Control."
This launcher provides parental controls and a child lock to protect your personal data. It restricts kids from using any app that you haven't approved, and there's a timer to limit the amount of time kids can spend on the device. It will also put restrictions on making phone calls and texting, and more.