Hey, I can't sleep so I decided to ask a few questions. If you're like me you have like 50 wallpapers on your iPhone, and like me wish that you could see them a lot more. Of course changing them on a daily basis is lame, so I am wondering if there is an app that will automatically rotate the wallpaper each time you lock the phone? My GF loves to send me nudies in my e-mail, and so does my mom. Is there any apps that I can lock just an image folder? I don't want to install something that I have to globally deal with all the time, but I would like to keep a few files safe from prying eyes.