Here’s my feature request related to the ‘identify’ tab and the app:
https://forum.inaturalist.org/t/expanded-id-help-functionality-in-app/395
though it only has three votes so maybe it isn’t high priority to people.
I think the voting system still is confusing people or hasn’t settled out yet though.
Broadly i think being able to do ID help in the app would be really nice, but Ken-Ichi is also correct that the smaller screen (and also the harder typing and such) would make it always not as good as doing so on the website