A system for providing aromatherapy to a user is described herein. The system comprises a mobile computing device including a mobile application to control the system; a diffuser mounted to the mobile computing device, the diffuser including: a body, one or more cavities in the body, one or more heating elements positioned to provide localized heating to the one or more cavities, a processor, and one or more non-transitory computer storage mediums. The system also includes a plurality of carriers including scented material, the carriers sized and configured to reversibly fill a cavity and position scented material proximate a heating element. The non-transitory computer storage mediums are encoded with one or more computer programs that, when executed by the processor in response to instructions from the mobile computing device, instruct the heating elements to apply heat from the heating elements to activate the scented material and deliver a predetermined aromatherapy experience to the user. Corresponding methods also are disclosed.