Desmos is an advanced graphing calculator implemented as a browser application and a mobile application. As of September 2012, it had received around 1,000,000 US dollars of funding from Kapor Capital, Learn Capital, Kindler Capital, Elm Street Ventures and Google Ventures. In addition to graphing both equations and inequalities, it also features lists, plots, regressions, interactive variables, graph restriction, simultaneous graphing, piecewise function graphing, polar function graphing, two types of graphing grids — among other computational features commonly found in a programmable calculator. It can also be used in several different languages.
Users can create accounts and by doing so can save the graphs and plots that they have created. A permalink can then be generated which allow users to share their graphs and elect to be considered for staff picks. The tool comes pre-programmed with 35 different graphs for the purpose of teaching new users more about using the tool, or even about the methematics involved.
A modified version of the calculator has been used in standardized tests, such as the State of Texas Assessments of Academic Readiness test. Moreover, activity modules for classrooms can also be created through a teacher account.