Does the principle of writing a back-end differ from the principle of writing a mobile application?

Question

Mobile development

I mean, will an experienced back-end web-developer be able to write a mobile application, or are the principles so different that he will have to learn most technologies from scratch?

Answer 1

I, as a person who tried to write a mobile application for my own needs, responsibly declare that if you wrote a backend not in Java, then it will be difficult. Different languages, different approaches, different technologies. It takes more than one month to retrain.

Answer 2

Backender will easily write front/client
Difficulties can be on visual effects and graphics, and in complex large projects in the beginning, comparable to switching to any language and much easier than from scratch

Answer 3

Wrote a mobile application on 1C. No difference.

Answer 4

If you have a head on your shoulders, then you can. The backend has learned how, the mobile application is not more difficult. All the necessary documentation is there, stackoverflow is...