 The paper presents an approach for easily improving and customizing hydrogeological software, which is necessary because most scientists are not software developers. The approach has been demonstrated using four examples, Mix, Fortran-based, Brine Mix, C++-based, EasyQuim and EasyBall, both spreadsheet-based. The improved software has been proven to be a better tool for enhanced analysis by substantially reducing the computation time and the tedious processing of the input and output data files. This article was authored by a Serrano one, our Criolo, eVasca soon, and others.