Printing all the font families and names available at the runtime of an application. Helpful for troubleshooting font issues. Reference: http://codewithchris.com/common-mistakes-with-adding-custom-fonts-to-your-ios-app/

PrintFontFamilyNames.m

// copy-paste at the begining of application:didFinishLaunchingWithOptions:

for (NSString* family in [UIFont familyNames])
{
    NSLog(@"%@", family);
        
    for (NSString* name in [UIFont fontNamesForFamilyName: family])
    {
        NSLog(@"  %@", name);
    }
}