One person built a race calendar app for run clubs with AI. It is live.

A solo builder started runclub.events in May 2026 with an idea and no code, opening the AI for the first time. Sixteen weeks later the app is in production with 990 commits, more than 53,000 lines of code, and 160 features live, helping run club members connect on upcoming races.

How it works

Buys the domain and opens the AI with just an idea
The first working demo is live six days later
Sixteen weeks in, a full Next.js, React and Supabase app is in production with auth and error tracking

Why it’s worth knowing

He had never opened the AI before May. The demo was live inside a week and the app never stopped growing.

Where it’s from

Summarized from a public post on bsky.app. See the original ↗

Upgraded prompt

A ready-to-use prompt for this idea, built from research on what makes AI agents do the job right: who the AI should be, the exact steps, and a check to make sure it was done the way you wanted.

1Who the AI should be

2The prompt, with the steps

3The check when it’s done

Upgraded prompts are coming soon.

Try next

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Every idea is a real post from someone who tried it, summarized in our words, with a link to the original. App names are swapped for plain words.