I tried using the service to learn how to do a math problem. The step-by-step method of explaining is made it impossible to understand how the solution was derived. I found an understandable solution for free on the internet. I never used it again, and I forgot about it since it was a free trial. I didn't remember to cancel until the bill showed up on my credit card. That same day, I cancelled and requested a refund. I was told Nope! You are stuck with using our crappy service for another month even though you cancelled on the 1st. No warning about the renewal either. Not even a partial refund. I will never use this service again and will spread the word for people not to waste their money.