This app is the full version of German From Scratch, it uses 4,000 of the most frequent German words, in 7,000 examples with explanations going through the entire German grammar. It will keep you busy for more than a year and when used properly will give the user the ability to form correct sentences with ease. The app has lot of content as it is the result of more than three years of work. Published in book form, it would be as big as a 400 pages book.