The AMBOSS Qbank for UMSLE Step and NBME Shelf exams is the ultimate exam preparation and study resource for medical students. Dive into thousands of USMLE-style exam questions to enhance your knowledge and prepare for all your exams. The AMBOSS Qbank app will rigorously prepare you for the USMLE Step 1, Step 2 CK, Step 2 CS; NBME Subject Board (Shelf) exams;