UX have been included in ISO 9241-210 to more emphasis that ergonomics and usability is more than designing, developing and testing things. UX addresses the kind of perceptual and emotional aspects typically associated with user experience. Considering the best practice provided by the ISO 9241-110,125,11, Gestalt principals, etc. and using the approach in ISO 9241-210 led to get good Usability and UX even before implementing the software.. This App aims to be a companion for my students in Ap