This presents the design of an application created under the user-centered design criteria. This implies that the purpose of the application is to solve a real need for the user and that it is satisfied both with the solution provided and with the ease of use of the product. To achieve this purpose, first of all, based on the initial idea, a market study was carried out on the current options and a first survey to determine the definition of contents. Secondly, a heuristic evaluation of the application, a redefinition of contents and a user test has been carried out. Finally, with the results obtained, the first version of the application has been designed.