Preferd scores every product 0-100 on how well AI shopping agents (ChatGPT, Gemini, Copilot, Perplexity) understand and recommend it, rewrites weak fields with AI, applies them to Shopify and shows the before-and-after lift, with one-click revert. Then it proves the payoff: first-party tracking of the visits, orders and revenue AI sends you, dated receipts of new AI citations, competitor share of voice, trends and a printable impact report. A guard restores overwritten work in one click.