I think you should be mentioning it is a Commercial Extension, just to avoid confusion.
And being a little pedantic, you actually need to install 3 extensions to use it. You must have the Sketchucation tool itself to manage the license or it won’t work. I mention this because it is possible to download and install the other two without the sketchucation tool.
Just in case someone misunderstands, I feel a need to point out that a sketchUcation membership and their plug-in shop extension are free. They are needed because they implement the license system.