So all over YouTube people post videos of what's happening on their phones. They are recording video of the screen. Some people are able to insert their own sound while we can also hear the sound coming from the phones. After searching around, it seems that this isn't an app you can find in the app store which makes me think that Apple does not allow this capability and people are doing it without the consent of Apple? Why doesn't Apple allow apps that record video of the screen? If I'm wrong about all this, can someone direct me to the app or program all these phone videographers are using? I have found Reflector 2, but it's not an app for the phone, and also Vidyo app but that looks misleading. Thank you.