A free app for Android, by Arabic Worldapp.

English Arabic Voice Translator & Typing Keyboard is a fast and easy-to-use app for translating online and for speech-to-text conversion. You can translate and type in the same screen, no need to switch to another window. The built-in keyboard allows you to speak to the app in any language and get the translation instantly.

This free English-to-Arabic voice translator app is also a dictionary, and it allows you to translate words and phrases into any language, with the option to save the translations for later use.