A powerful Circular Slider. It's written in Swift, it's 100% IBDesignable and all parameters are IBInspectable.
CircularSlider is available through CocoaPods. To install it, simply add the following line to your Podfile:
pod 'CircularSlider' ', '~> 0.2'
You can use this slider by declaring programmatically or by placing it in your Storyboard file. All the paramters are IBInspectable, so you can configure the slider directly in the Storyboard file (in the attribute inspector tab) without write any line of code!