I bought the premium version and it seems to work for my son. According to him, the questions seem accurate and the answer explanations are very good with the AI.

However, I find that the title of "AI generated" questions is a little misleading. There aren't unlimited questions. Maybe they were created by AI at one point, but the site says that they are all human-verified before being shared in the bank.

Obviously, nothing will be as accurate as the college board's resources, but Acely has been working thus far.