Took me until about halfway through college before I realized “study” means “play with the material in a variety of ways until you understand it” and not just “read the assigned chapters and do the homework” and I think that probably should have been discussed at some point prior to that.
I'm not sure what app this is, but in the US we have a very similar one called ZipGrade. For quick grading of multiple choice, it's wonderful. Teachers, if you want to know more about it, drop me a line.