Abstract: A user interface for operating an applicator for medical and aesthetic treatment using RF and ultrasound energies, with or without vacuum, comprising: a display, a plurality of views each configured to occupy at least a section of the display, the views adapted to present data responsive to physiological signals, applicator parameters and treatment parameters, a plurality of icons configured to occupy a portion of the views and adapted to designate the content of the views, wherein one of the views provides parameters setting tools, another of the views presents treatment progress, and at least one of the icons can be selected so as to switch the display between the views.