Learn different languages with this handy app

I always wanted to learn German as my girlfriend is German and I've found a very cool free app that makes learning fun and interesting. After you have downloaded the app you literary have weeks worth of free learning material. They also have more languages by the way. Neat quizzes are also fun.
Check it out: https://play.google.com/store/apps/details?id=com.idiomattack.uiGermanFree

Have u tried this app already ? and is this application is available in full version