To list all the installed fonts on iOS, for verifying your customized fonts are installed.

List fonts on iOS

// List the fonts name on the workstation to find out the real customized name.
for ( NSString * fontFamily in [ UIFont familyNames ] ) {
	NSLog( @"%@", fontFamily );
	for ( NSString * fontName in [UIFont fontNamesForFamilyName: fontFamily ] ) {
		NSLog( @" %@", fontName );
	}
}