What I learned from The Smurfs… « Cherie Runs This. I was going to write this, but she beat me to it! All the good ideas are taken. Have you watched the Smurf movie? I can’t bring myself to watch it.
Apple – Support – Discussions – Smurfs app …. So if you read this thread you will learn that some “Free” apps have some very costly in-game purchases. The take away I would get is to restrict in app purchases as Meg St._Clair suggests.
Have you disabled in app purchases?
Settings>General>restrictions
Select enable then turn in app purchases to off. Unless you do so, you are authorizing those purchases. No password would be required.
Best of luck.