Alan has been locking down his mobile phone so his kids can only launch an app that he approves. But it's only limiting the number of apps he can add. He's updated the Note 3 and wants an app that will put his phone into "Kid Mode."
Leo says that there are third parties that offer the kid mode. It's an off the record download though, and could be illegal. There's also Kids Place. That's going to be safer and will let him do a lot more.