For learning various important languages of the world the app Duolingo: Learn Language is the best one. The app is developed by Duolingo where you can learn Spanish, Portuguese, German, Italian, French and English. It has been announced as the “Best of the Best” from Google Play in 2013. With this app you can learn and practice the language you have learnt to make the base of that language strong enough.
The app is very much addictive as when you start learning the one you will like to try another one also. The vocabulary and the linguistic sense will be strong with this app. You can assess the progress of language with the achievements you can get by answering the questions correctly and comparing your previous practice with the present. Without any investment, any type of fees, and most importantly without ad you are getting this app which is really worthy of installing for you and your family.