First of all, we would like to point out that the text of the app is in Spanish, but we believe that it is very intuitive and easy to understand. With this app, you will be able to check the results and solutions of your mathematical operations so that you will not know the details of the operations, only the final result. This fact is what makes it attractive for teachers and students, especially of Compulsory Secondary Education (ESO), although there will be features that also serve for prim