There's no need for a Capital-I Investment App to be on mobile. You should be doing research on a bigger screen, and when its time to execute trades you shouldn't be doing them on the shitter and shouldn't care if its executed at 9am or 4pm or the next day.

The Robinhood app is totally designed to suck Millennials into daytrading on their mobiles.

Not everyone has a laptop or a desktop. And you can do plenty of research on a phone or iPad.