Android lacks the iphones guided access which is awesome for kids. You can basically lock the home button, touch screen, rotate, ect. and any combination there of. I haven't found any app close to it for android. Until that gets sorted out, I wouldn't waste my money on this. You will be wasting all your time setting their movie or game back up. Might as well just use your own tablet.
I always knew the Tab 3 was a toy... But really why is the market preying on children now. Cigarette companies do the same (to teens) so they get addicted and spend money in the business. Just ridiculous. And parents who buy this are irresponsible.