The main difference between using commercial software and our app is the knowledge user must have to run the simulations. Commercial apps are created for a large spectrum of cases to simulate. It requires significant knowledge from the user to run even basic simulations. The next point is that running more complex simulations takes a lot of time. Creating custom applications allows running CFD simulations by everyone after the short introduction we do after the release of the application. Restricting the range of possible cases to simulate also accelerates the design process. The final cost of the tailored application usually equals the annual license of commercial software.