The Google Translate for the iPhone app is officially available for download from Apple App Store. It claims to be equipped with features of the web app that was launched in 2008, and new additions designed to improve overall translation experience.
The Google Translate for the iPhone app accepts voice input for 15 languages, and like the web app, you can translate a word or phrase into one of more than 50 languages. Simply press the microphone icon next to the text box and say what you want to translate and listen to the translations spoken out in one of 23 different languages. The feature uses the same speech synthesizer voices as the desktop version of Google Translate introduced last month.
Full screen view is another feature that lets you read the text easier, or show the translation to the person you are communicating with. To zoom in, just tap on the zoom icon. Other features include dictionary results for single words, access your starred translations and translation history even when offline, and support of romanized text like Chinese Pinyin and Japanese Romaji.
The Google Translate for the iPhone app is now available from the App Store and is available in all iOS supported languages, though you’ll need an iPhone or iPod touch iOS version 3 or later.
Source: Official Google Blog