Vibe-coding has quickly become the new productivity hack for everyone. Instead of spending hours setting up boilerplate, configuring databases, or wiring APIs, AI tools can now generate working applications from a single prompt. But after seeing countless demos of polished dashboards and landing pages, I wanted to test something closer to real software development. So I built the same backend-heavy SaaS app using Lovable and Claude Code to see which tool actually improves developer productivity once the project becomes complex and difficult to debug.