Apple is doing a much worse thing in choosing Helvetica Neue as their UI typeface, first for iOS and soon for the next version of OS X . They too have gone to lengths to declare publicly how they are optimizing it for legibility, which is rather like trying to polish a turd. Helvetica is inherently anti-legibility. The only way to make it otherwise would be to change it so much that it doesn’t look like Helvetica any more. Sadly, that is not what Apple is doing.Thomas Phinney.