Reading and listening materials and tests are OK, but most of the writing and talking are "self-rated". I didn't manage to get more than one human review from them, even after I tried to talk to their customer service, offering to pay whatever is needed to get a human eye on my mockup test. Different people in support told me different things, and eventually just closed the request without answering my last email. For the IELTS exam, just go with IELTS Premium (guided Elearning), promoted by the British Council. It's accessible from your account after you register for IELTS.
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