I\'m currently working on an app that uses the \"ChalkboardSE-Regular\" font and my deployment target is 4.0+. This font was not available in 4.1 but it is supported in 4.3
Here is a conversion of Steves answer to Swift code (for quick copy and paste purpose):
var fontFamilies = UIFont.familyNames()
for (var i:Int = 0; i < fontFamilies.count; i++) {
var fontFamily: NSString = fontFamilies[i] as NSString
var fontNames: NSArray = UIFont.fontNamesForFamilyName(fontFamilies[i] as String) as NSArray
NSLog ("%@: %@", fontFamily, fontNames)
}