I tried it. I have an Icon air fryer. you need spray some oil inside so the food will not stick on the pan. You just need to set the time for which food you will fry.
They can reduce the number of calories from foods that usually require frying in a vat of oil.
I have never ever heard of it let alone see one. But then your query made me ask my friend Google what it was and its function. Brother Google not just explained its function but also showed me a picture if it. Thanks for adding something to my knowledge. For those like me who wish to learn, here is the link: