The American College of Physicians (ACP) produces evidence-based clinical practice guidelines, which means that the guidelines follow a rigorous development process and are based on the highest quality scientific evidence. Internal medicine physicians and other clinicians can now access these clinical recommendations in virtually any setting via the ACP Clinical Guidelines app. Available for free, the ACP Clinical Guidelines app includes recommendations from ACP's clinical practice guidelines and guidance statements. Users can conveniently access clinical recommendations and rationale, summary tables, algorithms, and high value care advice for all currently active ACP guidelines in an easy to read and interactive format. ACP is a national organization of internists --physician specialists who apply scientific knowledge and clinical expertise to the diagnosis, treatment, and compassionate care of adults across the spectrum from health to complex illness. ACP is the largest medical-specialty organization and second-largest physician group in the United States. Its membership of 133, 000 includes internists, internal medicine subspecialists, medical students, residents, and fellows. The mission of the ACP is to enhance the quality and effectiveness of health care by fostering excellence and professionalism in the practice of medicine.