If you study German as a foreign language you know that one of the things that make it so difficult to learn is memorizing noun gender and verb conjugation. That can be done in many different ways, but really they all reduce to guessing and checking. And the more you learn, 'guessing' gradually becomes 'knowing'.
Darfyx came to help you make that move. Here you will find hundreds of nouns and verbs asking for an article or conjugation. You can (and you should) repeatedly take each exercise, let Darfyx grade your answers and then go again. A new list is randomly generated each time, giving you an endless supply of practice.
All of this beautifully simple and straightforward. You will not ever have to pay, register or provide any personal information. Just open up your browser and start practicing. Go ahead and try one of the exercises from the list!