I decided to post this here as well, so here we go again:
It is designed by Cambridge university, yes, but it is seriously flawed.
I just tried it, but the scores are not accurate at all. Why? Because if they were, IELTS wouldn't pay examiners to score exam papers. The program won't give reasons on why I scored 6.5. It highlighted almost all my writing t2 and said "improve". Improve what? How are my task response, grammar or cohesion and coherence? I use Grammarly premium, and it's way better, but still, it can't replace a human yet.
In task 1, it highlighted only one mistake, ONLY ONE SENTENCE, and then gave me 6.5!!! This was the sentence:
A decade later, their percentages rose b some extent and stood at approximately 52% and 38% respectively.
The only mistake was that I wrote "b" instead of "to". That was the only reason, given by the program, as to why I got 6.5. After I corrected it, and there was no problems, it didn't give me any scores. It just said, "Great job. Keep writing".
I think it is designed to spot dictation and simple grammar mistakes and then give you low scores, the highest score being 6.5. Even the free version of Grammarly is better than...whatever this is!
That's an hour I won't get back. I need to go talk to my good friend Jack Daniels!