Taking a mobile prototype into production is a concrete job, not a vibe check. Cursor and VibeCode genuinely diverge here because one is an AI coding environment for people who will own the code and toolchain, while the other is a prompt-driven mobile app builder that bundles more of the path from idea to deploy.
That job exposes the failure modes that matter because production is where rough edges stop being cosmetic. Context limits, deployment assumptions, export restrictions, native build plumbing, and backend coupling all become expensive once the app has users, data, and bugs that need fixing under time pressure.