SCG stands for Single Clinopyroxene Geothermobarometry, a software application for clinopyroxene geothermobarometry introduced here for the first time to the scientific community along with an explanatory note. SCG is a highly specialised and user-friendly application. It compiles 16 well-established clinopyroxene geothermobarometry calibrations, including 10 geobarometer and 6 geothermometer equations, to estimate temperature and pressure of crystallisation of clinopyroxene in mafic igneous systems. SCG flexibility allows the selection and use of any pair of preferred geothermometer and geobarometer equations. Therefore, it provides 60 different combinations to calculate simultaneously Pressure and Temperature. It works both in a graphical and analytical form.