Rehearsing your answer is the easy part. The hard part is the third question — the one that comes from what you just said. Roleplay is an AI that listens, then presses exactly there.
Every other practice tool scores something you prepared. This one asks you something, hears the answer, and follows up on the weakest thing in it.
A recording can tell you how fast you spoke. Only a conversation can tell you whether your answer survived being challenged.
Everyone sounds good until the follow-up. Sit across from an AI that asks it, fifteen times, then tells you exactly where you wobbled.