How to make a vertical UISlider?

You have to do this programaticaly. Assuming your UISlider is bound to a variable called slider, add this code in your viewDidLoad method in ViewController.m:

- (void)viewDidLoad {

    [super viewDidLoad];

    CGAffineTransform trans = CGAffineTransformMakeRotation(M_PI * 0.5);
    slider.transform = trans;
}

Let me know if you need any more help on this..