early testing with AI-simulated personas

Most UX validation happens too late. By the time a concept gets real feedback, it has already been through rounds of review and iteration. I built this tool to move that loop earlier.

The Synthetic User Testing Engine simulates how different user personas would respond to a design, piece of copy, or strategic artifact before any real user sees it. You define the context, select your personas, and get structured feedback across six dimensions: first impression, comprehension, relevance, friction, intent to act, and open feedback.

The goal isn't to replace real research. It's to make early validation cheap enough to do constantly so you kill weak ideas sooner, ask better questions, and show up to real research with sharper hypotheses.

I use it across concept work, wire frames, high fidelity design and strategy. Built with the Anthropic API, deployed on Vercel.

Design Process & Tools

Open AI API
Claude Code

TIMELINE: 72hrs