iPhones or iPads can be childproofed to ensure it’s safe for your kids. Guided Access allows you to lock your device to one specific app while Restrictions allow you to disable certain apps or websites from being accessed. Other parental control software is also available on the app store if you need more control.

http://www.businessinsider.sg/how-to-childproof-your-iphone-or-ipad-tech-parental-lock-family-2017-6/