There is a child/lock mode, need to triple click home button (you may need to enable it), however the problem remains if the app has extra buttons that little ones love pressing.
Yeah — That is called guided access mode. I use an Apple API that requires you to double gesture to bring up any menus or leave the app. This has actually proved sufficient for keeping my kid kid in bounds. You can always 4-finger pinch and leave my app though.
