I recently used lovable to create the scaffolding for an app. It did a great job, far better than I expected.
However, it also squishes everything into one JS file, making it unwieldy for anything moderately complex. After I fell off the happy path (integrating onnx was basically impossible), I had to spend a fair amount of time reworking it.
I’m probably not the target audience though. And I got the end result faster than I would’ve, and it’s better looking.