# General

SPHY v3.1 can only be installed at the moment as a stand-alone application, where the user can run the model throughout the command prompt. The earlier versions of SPHY 2.0 and 2.1 have Graphical User-Interfaces (GUI) as plugins and have the advantage that changing the model input and output, as well as changing model parameters, is more clear and user-friendly. The GUIs developed using QGIS\[7] Geographical Information System (GIS) are not available for the SPHYv3.1. Section 4.2 describes the installation of SPHY v3.1 as a stand-alone application.
