This is like Add "Answer Later" Tab, but specifically for the mobile apps. When on the Android app, often I see a question for which I can think of a good answer, but writing it with proper references, or with properly indented multi-line code is cumbersome on my mobile. I try to make a mental note to answer them when I get to a PC, but I frequently forget.
I could misuse the favourites feature like the other question's OP does. But the mobile apps could really benefit from this.
It would be nice if I could mark the questions, and then the next time I visit the site on a desktop browser, it would show up as notifications or something.
(I'm not a iOS user, but I presume the iOS app doesn't have this either.)