The biggest advantage is that it sends you a ping when it’s done, and can send you a message about the need for routing maintenance, like changing filters or refilling the detergent container.
Settings wise, it’s slightly easier to set from the app, since a telephone has better UX than a washing machine. Mostly I just leave it at “you figure it out” so it’s moot.
You can’t actually start it remotely unless you press a button on the machine first, just send settings to it to activate by pressing start.