>>21405242They're mini convection ovens, and are more concentrated or controlled, you could always buy these as "toaster ovens" the higher end ones did the exact same thing.
Unless you have a really powerfull full sized convection oven you won't get the same result as an air fryer. Although, if you have an electric oven, you can get the same results by buying "coated" frozen fries, and placing them on the bottom rack and cooking them a bit longer than usual.