It's actually pretty easy, assuming your phone is jailbroken. Please note that this is about 589437598347594387x easier if you have a Mac with Xcode installed. Go into your iPhone using some FTP application, and navigate into the directory of the app you want to give no name to. Download the file called Info.plist. Open it with Property List Editor, a tool that comes with Xcode. Select the application name to the right of "Bundle Display Name" and just hit delete so there's nothing there. Save the plist and reupload it to your iPhone, and there you go! That's what I use to totally hide my app launcher. Good luck!