I could believe it if you counted only the time taken to type just literal code. Probably discounted the time it would take to build the UI .xib, wire up all the event-handler delegates, and set all your layout constraints for the various screen sizes.

And doesn't this use the camera and/or photos API? Not hard, but somewhat time consuming to set up your boilerplate for these. Also handling permissions request, response, & error handling. Probably copy/pasted from another project so it wouldn't count?

Yeah I'm skeptical, but also sounds like a fun challenge.