-The interface is simple and stylish.
-The translations are done instantly.
-The application is totally free.
It's a perfect translator from english to spanish and also from spanish to english, but it also has more languages like for example russian, french, german, italian , chinese, catalan and many others.
(You must have internet connection for the correct use of this application on Android).
-Android 3.0 or higher
-You need internet access for proper operation