Decision support and information al apps comprise a second category and can be considered MAs in that they provides data for direct patient care .Apps such as Epocrates (www.epocratescom) began as applications that ran on personal digital as sistants and have now evolved to be smartphone apps. Epocrates provides a free app that is a basic drug reference, providing information on drug dosing, interactions, and pill identification. The basic app is free whereas a more comprehensive version of the app is available for a yearly fee. Other apps that calculate patient measures, such as body mass index, can also be used by providers at the time of a patient visit to give immediate feedback on weight trending