I am sorry, but you are mistaken. There are no AI. The "AI" that is being mongered today is just a salespeople buzz word for Large Language Model technology, which is just that, a language model. It can be used to generate seemingly coherent text, but it can not reason.
> Would I use it to build a complex app? No. But it is capable of building a whole app.
It only works for you as you accept lowering the bar of that would pass as an "app".
I mean of course any kind of normal app. Say Microsoft Paint for example.
Show me ChatGPT able to create a full app like that based on business logic you prompted.