With this app we solve problems of muffled and undamped movement. In the following steps: - We select mass, rigidity and damping coefficient. - We solve without initial conditions. - We set the initial conditions with the buttons and sliders. - We show the solution with its respective graph. - We chose the time "t" to calculate: displacement, verlocity and acceleration. - Click on the button evaluating and graphing. To show the respective graphs. Creating for engineering students. In Spanish.