I just tested it. This works on Macs or Chromebooks. Streamlined interface, user adjustable keyboard shortcuts, editable shapes with adjustable fill and stroke, line tools that include the ability to draw bezier curves, and path tools with the ability to intersect, unite, subtract, or exclude.
Those are all powerful conceptual graphic design tools. Being able to introduce these staples of vector graphics with a simple, free tool, that's administratively easy to install and update is a huge win for schools with tight budgets.
The only missing features/functions I see so far are snap constraints, alignment, and dimensioning. If the app author adds those, this will become powerful enough to use with CAD tools like laser cutters without an intermediary.
Thanks so much for posting this, David! I'm pushing it out to our school's Chromebooks right away.
Jonathan