Unity Penelope things I don't understand

Well, I have downloaded the unity penelope sample into my unity

however there are many problem with this app that I don't understand

1. When i try to build the unity version into IOS, it just fail to run in IOS with zero error, it just quit within 1 second
2. When I download the penelope app from the appstore, it is working fine, when i check the size it eat, it only eat 16 MB, but when i build empty project it eat 64MB, where did the 50MB coming from
3. Dragging the camera controller script into my own character will only work in unity but not when i build it into the IOS

sigh, rough road again, I am stuck!!!!!! if there are any expert out there who can help, PLEASE HELP ME!!!!