The learning part is very good except for certain words where the definition is not what is implied in the sentence and therefore the definition itself for a new word would be unusable and confusing.
The second problem I have is the LACK OF LANDSCAPE VIEW! I mean SERIOUSLY??!! Its 2016! People use iPads for these apps! Its utterly unusable on an iPad!
The Rhythmist about Learn German: Language Course, v4.5.2