What is a mobile developer? Someone who spends 2 weeknights worth working on an app? Or a guy who does nothing but that for months, hiring full quality artists,

What is a mobile developer? Someone who spends 2 weeknights worth working on an app? Or a guy who does nothing but that for months, hiring full quality artists, etc. I think the issue is many mobile apps aren't fully baked ideas implemented with the full range of work.