Such a program can also be called an essay rater, a paper rater, a paper grader, polishmywriting, etc. It employs computational linguistics combined with statistical analysis of good examples of essays and other writings. Based off of that, it will proofread my essay for spelling, grammatical and other errors. Moreover, I get valuable suggestions in terms of style and choice of words, based on the ways the words and grammatical structures are used in good examples, and not on someone else’s subjective assumptions.
To proofread my essay is a sensitive job. So, naturally, one experiences serious doubts regarding trusting to check paper or rate my paper or grade my paper to a seemingly mindless machine. I also had such doubts, but then - after yet another delay caused by not finding a proofreader in time - I decided to give it a try. And I have to say that I was not disappointed.
We are all human, we can all make mistakes. When I edit my paper myself, I do find little flaws or just some things that can be improved here and there. But when I have to proofread my essay myself, it is very easy to overlook some details. It is not enough to just edit my paper myself. This is why we all could use a paper grader’s fresh view. A second opinion never hurts anybody, especially that of a professional paper rater.