At WWDC 2015, there was a session about the new “San Francisco” system font in iOS 9. It uses proportional number rendering instead of monospaced numbers by default when linked against the iOS 9 SDK. There is a convenient initializer on NSFont called
NSFont.monospacedDigitsSystemFontOfSize(mySize weight:) that can be used to explicitly enable monospaced number display.
However I couldn't find the
UIKit equivalent for this on