We are in the age of PWAs. I've created a few where I just host them on Github pages (no backend needed, no hosting costs).

And the P in PWA has become "Personal" ... vibe coding apps with no backend for non-developers for their _personal_ needs e.g. a create a job hunting app for my son specific to the types of jobs he's looking for. If I update it, it updates on his phone plus he can sync to his laptop via WebRTC.