Free Online GRE AWA Essay Grader. Automatic essay rating software for practice. The GRE analytical writing is a small but important component of the test that. Stop guessing and know your grade in advance. Get free feedback and an estimated essay grade with Kibin's free paper grader service. The Benefits of the Free Essay Grader. If you're struggling with your essay, free online essay checker can take your writing skills to the next level. How? By using .