ELI5 Air Fryers - just fancy convection ovens?

How does an air fryer work? Isn't it just a fancy convection oven? Is it really more healthy? What does the air fryer have in common with the instant pot?   ... We explain like i'm five!   Thank you to the r/explainlikeimfive community as always and in particular the following users whose questions and comments formed the basis of this discussion: rritaintme, jaksblacks, whythecynic, muffinpuff, exnato, osgjps, greenstrong, kaki_kencing & xelopheris To the ELI5 community that has supported us so far, thanks for all your feedback and comments. Send us an e-mail: [email protected]