The app offers you thousands of German grammar exercises, as well as lessons and summaries of the key grammatical topics. You don’t need to take leveling tests, just pick any topic and start learning it, regardless of whether you are on A1,A2,B1,B2 or C1.Thanks to a clean and user friendly interface, you can solve dozens of exercises in a row to memorize concepts and grammar rules in a short time. When you finish an exercise session, you can check your score and a detailed correction of your answers.