Use Google Stitch when you want screens and flows in minutes, without waiting days for a design. I lets you explore the solution space with the team or run an ad-hoc prototype and record a quick Loom.
Use Google AI Studio when you want an app-like prototype that behaves, can be shared, and used in experiments. A great option to prototype AI features (native capabilities).
Use Firebase Studio to build production apps only if you’re ready for developer workflows like the terminal, dependencies, and ports. Cursor is great too, but both come with a steeper learning curve for PMs.
If you want to build something that feels like a real product without touching a terminal and can become much more, use Lovable or Dyad. Just keep in mind that engineering teams in large organizations won’t use them. They don’t fit traditional workflows.