Publishing it
The app runs locally: showing it to someone takes two steps, in this order. First the code goes to GitHub, then Vercel publishes it and hands you a link. We won't re-explain them here: each of the two has a whole course of its own, from the first screen to the public link.
No extra trick: the project from the previous six parts went to GitHub and then to Vercel, and this is the address that came out of it — code included, open to anyone. By the end of these two courses, yours will have its own.
The link is public: send it to the client and the demo opens on their phone, nothing to install. The repository is public the same way: open it to see how it's built inside.
The point of this whole guide, in one line: it's not the final prompt that makes the difference, it's the decisions made before writing it.