Q:

Where Could I set the application name user see in home screen

Where Could I set the application name that user see in home screen, under the application icon.

A:

Add the following line to the InfoPlist.strings file:
CFBundleDisplayName = "My Great App";

The advantage of this method (as opposed to the entry in Info.plist) is that you can provide localized app name for several locales.

A:

Set "Bundle display name" in the Info.plist or your App settings file.

