It's cool that such services appeared, but when I studied at the university, I had no money for it. I did all the homework myself. I'm very lucky that there is enough information on the Internet to do my homework. For example, here
is a very useful article if you need to arrange a list of references, but you have forgotten what is called a book or who is the author. Indeed there is a lot of useful information on the Internet, you just need to be able to search for it.