Good, but missing Unit Step and Dirac-Delta Functions

This app is very good if you want to plot or integrate a function quickly. Nevertheless, for engineers, the unit step and dirac-delta functions are constantly involved and this is missing in both the Calculus and WolframAlpha apps. To be able to plot or integrate unit step functions would be a huge step forward for the use of this app in engineering.

CharlesChurros about Wolfram Calculus Course Assistant, v1.0.0