It’s okay at best
This program is very simplistic and I am comparing to the comprehensive app called Duolingo. Consequently, I just raced through the first lesson and it is not necessarily a good learning model. Why? Because once a user learns the nouns, he/she can cruise through the exercises in the first session simply by noun recognition. This application offer little variety in contrast to Duolingo.
Meister Fritz about German in a Month, v1.8