Eating Disorders (ED) are common and serious psychological disorders. Anorexia Nervosa (AN) has a prevalence estimated at between 0.48% and 0.70% among young females. Bulimia Nervosa (BN) is a serious mental health problem, with a prevalence of between 1-2% of young women while clinically significant bulimic behaviors occur in an additional 2-3%. There are significant barriers to access of evidence-based treatments and current models of individual psychotherapy will likely never meet the enormous need for psychological services for ED. Unfortunately, even with treatment, rates of recovery are modest with the best performing treatments achieving remission in only about 50% of cases while relapse rates are high, especially if the ED becomes chronic. It is widely acknowledged that a major shift in intervention practice is needed and that smartphone apps will almost certainly play a role due to their reach and breadth of functionality.