I’ve mentioned a number of nice UISlider components, most recently this component allowing you to create range sliders with a number of custom themes.
Here’s an open source component submitted by Al Skipp that provides an slider enhanced with a great looking customizable animated pop up view to indicated value called ASValueTrackingSlider.
With ASValueTrackingSlider you can customize the text color, font nand size, and animate the background colors while the user slides.
You can find ASValueTrackingSlider on Github here.
A nice enhanced UISlider.