Buildra is an AI app builder that turns natural-language descriptions into functional applications. Its agent plans, designs, builds, and tests projects inside a live sandbox that users can monitor and interact with. It supports web apps, mobile apps, backends, and scripts, selecting the technology stack automatically unless users specify a preference. Once the application is ready, Buildra publishes it to a dedicated web address. Users can download the source code, while projects run in persistent sandboxes that sleep when inactive and resume when revisited.