I maintain a transit website as a hobby, and I'm building a Flutter app, from scratch. The old pre-COVID one carried mental baggage.

I spent a few weekends building comprehensive plans, designs, user maps, etc with Claude. So it has enough context to make decisions and keep going.

One session lasted over a day, I imagine partly because Fable + superpowers feels slow. I have an app on my phone that I have been test running since Monday on the bus.

What really helps (not sure if Opus used to do this) is that Claude will run through the emulator on its own, verifying that the design aligns with the Figma design system we created.

This is all building on top of 15 years of existing backend and rich features, so it's not a "build me a transit platform from scratch" where AI can end up making bad decisions.