A five minute calculator that puts a figure on what a company loses by not having a design system. Its own promise: Find out how much design waste. A stepped questionnaire, a result in euros, and then three plays to fix it fast. Contact details are asked for at the end, once the number has already done the convincing.

Designed and built in code, with AI as the build partner. No design file, no specification, no handover between design and development. Logic, interface and deployment were built as one flow and shipped to the network edge on Cloudflare Workers, with no server to keep alive.

• Design and development were the same step.
• No backend team and no environment to set up: the calculation and the screens were built by the same hands.
• The only one of the nine built without another project running alongside it. Four days meant four days.

Calculator, result page and contact flow in production.

4 days of effort across 4 active days. 27 commits.

• The full tool, responsive, deployed on Cloudflare Workers.
• A stepped questionnaire with the result calculated in euros.
• Three plays to fix it fast, shown after the result.
• The contact form placed after the figure, so the tool earns the details rather than gating on them.