Yes, it shows all the fonts within your app, including the custom fonts you’ve added. Here’s the shorter code to list all the fonts:

Objective-C

for (NSString *familyName in [UIFont familyNames]){
    NSLog(@"Family name: %@", familyName);
    for (NSString *fontName in [UIFont fontNamesForFamilyName:familyName]) {
        NSLog(@"--Font name: %@", fontName);
    }
}

Swift 2

for familyName:AnyObject in UIFont.familyNames() {
    print("Family Name: \(familyName)")
    for fontName:AnyObject in UIFont.fontNamesForFamilyName(familyName as! String) {
        print("--Font Name: \(fontName)")
    }
}

Swift 3

 for familyName:String in UIFont.familyNames {
     print("Family Name: \(familyName)")
     for fontName:String in UIFont.fontNames(forFamilyName: familyName) {
         print("--Font Name: \(fontName)")
     }
 }