That's interesting but I'm not sure launch date should be the date that determines when it's fair for you to have a name. FiftyThree's Paper is no doubt the better one (I was at WWDC and applauded them when they won their ADA), but some apps take a very long time to build. While you're building your masterpiece, some bozo could start and finish a lesser app and use your name before you have a chance to do anything about it.