Developer Pulls AI-Built Site After Discovering It Cloned an Existing Open-Source App

A developer who used Claude to spin up a stargazing web utility called Dark Hours has taken it offline after learning it closely mirrored an existing open-source project, DarkHours.app — down to the name and even a bug the original author had already patched. The original developer flagged the resemblance in a Bluesky thread, and within about an hour the author concluded there was no meaningful daylight between the two, so he redirected his domain straight to the original and scrapped plans for a companion iOS app.

The post is framed as an apology. The author says he had never encountered the original project before the exchange, but acknowledges that leaning on AI to generate a whole app without checking whether it duplicated existing work was careless and his responsibility. He credits the original as the genuine article and urges anyone who liked his version to use it instead.

The episode is a small but concrete illustration of a growing risk with generative coding tools: models trained on public repositories can reproduce an existing project wholesale — architecture, naming, and latent bugs included — leaving the person who ships it exposed to unintentional plagiarism. The author says he’ll stop using AI to build web apps outright, limiting it to narrower tasks like debugging and answering questions.