The best free application to translate text from English to Spanish and Spanish to English. 
Traductor ingles español

You can translate words and sentences instantly. 

Can be used offline with the favorites menu.

Features of the application
 - Translation of words and sentences
 - Voice input, you can speak and translate instantly 
 - Voice output with accent to hear the translated text
 - Share the translation by message or send by mail
 - Favorites menu to bookmark and see the translations offline
 - Can be used as a dictionary with favorites mode 
 - Translations can be copied in the clipboard
 - Perfect application to learn Spanish and English languages
 - Best application if you want to travel and communicate

Translate English to Spanish and Spanish to English