It is worth mentioning that no artificial intelligence will give you the type of comments and tips an experienced writer can. That is why many students choose to cooperate with online tutors. Keep in mind that to make the evaluation process more objective and transparent, there will be two readers of your essays. They have a list with specific grading criteria to make their work easier. When you cooperate with an expert who has been reading GRE essays for many years, you have a higher probability of getting an accurate estimation of what you are going to get on an actual test. Free tools are great for practice, however, only real experts can help you improve your results.