Has anyone “Really” developed Fullstack app using AI tools?

I have been using lately all the the AI tools, e.g. Github Co Pilot, Chat GPT, Ollama, Cursor etc. for helping me write serverless cloud applications, unit tests, data pipelines etc. Being data engineer I was never working with Full Stack apps and front end. I want to now develop a marketplace application which works in browser and mobile. Simple listing app where users can browse listings in different categories and chat with each other to organise pickup etc.
How hard it is built such an app with all the tools, templates, solution accelerators today ?
Any tips or pointers will be really appreciated.