It's a good resource but there are some major flaws
It's a good resource, but doesn't actually provide the feedback on your speaking unless you click through to a secondary screen which breaks the flow. The ads suggest that the tutor will correct what you say verbally but even with the strictest setting this doesn't happen. It does help build familiarity and confidence with speaking if you already have some knowledge. You also can't hide the written script which shows what the AI will say before they actually say it. It breaks the flow of the conversation.