The operating room (OR) remains primarily a master/apprentice-based learning environment for surgical residents. This app puts into practice a simple model for teaching and assessing residents in the OR to guide faculty and resident interaction and to help determine a trainee's earned level of autonomy for a given procedure. It is based on an original paper published out of Northwestern University Feinberg School of Medicine and the University of Kentucky College of Medicine (Debra A. DaRosa, Ph