iPhone users have been able to use a mobile-optimized HTML5 version of Google Translate for some time now, but they can now finally also get an honest-to-goodness app of their own just like their Android-using friends. That brings with it a number of enhancements over the basic web app, including a speak-to-translate feature with support for 15 languages, the ability to listen to your translations in 23 different languages, and a full-screen mode that lets you show your translated text to others with large, easy-to-read text. Google is stil