Capacity

Capacity builds web apps for people who do not code: you explain the idea in plain words, it asks a few questions before building, and the result has member accounts, saved data, payments and your own domain. It can also be driven from Claude or ChatGPT, where your existing subscription writes the code and Capacity handles hosting, the database, domains and version history. Messages sent through Claude or ChatGPT run on that plan rather than Capacity credits, and the same app can be reopened in Capacity with its version history intact.