I just wrote the back-end for an iOS app, I had nothing to do with the front-end and the sole front-end developer had nothing to do with the back-end.
We used a simple Rest API. Where is the problem?
- Web dev -
Backend dev scope: Model, Controler
Front end dev scope: views
- Mobile dev -
Where as with an mobile dev, their scope is model, view and controller code (full stack)
Your thinking of it in terms of the whole mobile app being the front end and the rest API being the backend. But the app its self has both "front end" and "backend" code segregation its self
To assume otherwise is a bit of a generalization.