You use sideloadly to install any ipa you want.
If you don't have a developer account it will sign the application using a key with the validity of seven whole days! (instead if you have a developer account it will be valid one year, and don't forget to pay the 99€/year ransom)
Because I understand the technology and what it can and can't do.
It can invent text, images, video and code. It looks very convincing. Sometimes it even works correctly.
Sometimes when you ask it a question it can answer it correctly. Sometimes when you ask it the same question it will give you a different answer, a false one. Some may say that humans do the same thing. But computers and computer programs shouldn't always have fuzzy logic. Sometimes there is only one right answer and I like my computer programs to be deterministic so that I know I can trust them.
It also doesn't "learn". It forgets everything when the tokens are cleared from memory. And memory is limited. It only "learns" when the model is trained again by its maintainers.