Change character spacing on UILabel within Interface Builder

I know it’s not an Interface Builder solution, but you can create a UILabel extension and then add spacing to any UILabel you want:

extension UILabel {
  func addCharacterSpacing(kernValue: Double = 1.15) {
    guard let text = text, !text.isEmpty else { return }
    let string = NSMutableAttributedString(string: text)
    string.addAttribute(NSAttributedString.Key.kern, value: kernValue, range: NSRange(location: 0, length: string.length - 1))
    attributedText = string
  }
}

Consider changing the default kernValue from 1.15 to something that works better with your design.

When implementing always add character spacing after setting the text value:

myLabel.text = "We used to be so close"
myLabel.addCharacterSpacing()

If you plan to have different spacing at different places in the app, you can override the default kern value:

myLabelWithSpecialNeeds.addCharacterSpacing(kernValue: 1.3)

This solution overrides any other attributes you might have on your UILabel‘s attributedText.