Prototypes (clickable or coded)

Why these exist A prototype that ships beats a deck that argues. Each of these four was built in days, not weeks, to test whether the problem space deserved real engineering investment. What ships in a Product Joi prototype - A live, deployable landing page (not a Figma file). - A clear ICP and one-sentence value prop above the fold. - A single primary CTA tied to a measurable conversion event. - Enough polish to send to real users for real signal. What we learn - Whether the problem is acute enough to drive intent (signups, demos, payment). - Whether the language we use to describe it resonates with the ICP. - Whether pricing and packaging assumptions survive contact with the market. What we do next - High signal → fast-follow with a scoped MVP, sized like the PRDs in this library. - Low signal → kill or pivot framing. The cost of the prototype is the cost of the lesson. Each prototype below is live. Click through to see the framing, the CTA, and the conversion mechanic in production.