SayHi Translate - SayHi Translate is an interpreter in your pocket, designed with face-to-face communication in mind. Simply talk to your iPhone, iPod Touch, or iPad and hear your words back in different languages
Dictionary.com for iPhone - Carry a dictionary and thesaurus wherever you go with this easy to use app! View language reference content from trusted sources like Dictionary.com and Thesaurus.com right from your iPhone
iTranslate Voice - allows you to speak in one language and immediately hear yourself in another language. You can also look up definitions for common words and phrases, just by using your voice. Translations can be shared via email, SMS and Twitter
ABBYY Lingvo Dictionaries: English - Spanish, French, German, Italian - Get access to 58 basic dictionaries for 27 languages.
Over 200 additional premium dictionaries for 20 languages are available for In App Purchase.
Photo translation function – the easiest way to translate words with the iPhone 4 or 3GS built-in camera