Improve your foreign language by using it. Learn the language in context. With this app you can learn the construction of sentences. By translating the sentences you will learn from your mistakes. The solutions are translated by people, ensuring a good quality and naturalness of the language. There are many ways to say something, but some ways of organizing the sentence are more natural than others. By translating you will not only learn to speak and write the language but also vocabulary in context.

All for free, no internet connection and no tracking!

Source Code: https://github.com/Sinnefa/Android-Webview-Based-App-Template
Web app: http://www.sinnefa.com/pinguino/