In addition, it's inabillity for the admin to delete tests taken by the user.
If the lite version is meant as some kind of demo for the full version, I think it does a poor job.
However, spending $75 for the full version seems fair to me, but I would like to try a demo first.
"ARI Quiz Lite" is a simple quiz extension which provides basic functions to create quizzes on Joomla! sites. "ARI Quiz Lite" and "ARI Quiz" are two different extensions. You can find the comparison table for these extensions on our site.
It is possible to try both extensions in action on our demo site.