I have found this new iPad app " Hello-Hello World" path breaking in innovation and technology.
The reason why I am mentioning this app is because of its awesome user experience delivery. This app offers language learning in Global Classrooms environment, i.e. one can learn with all students across the world.
They app offers the choice of many foreign language learning options like Spanish, French, German, Chinese......but the best part about this app is it's free. One can download and experience first and then they can subscribe the detailed learning contents.