This app is a demonstration of the multi-fidelity linear regression methods presented in my work. Due to the fast inference capability of the underlying linear regression based methodologies, we can enable live visualizations of the surface pressure field upon a hypersonic vehicle. When a user changes the parameters, the surface pressure field is updated live and the rendering reflects the changes! One can change between the multi-fidelity (multi-step) and single-fidelity methods to see the differences based on flight conditions.