EA App Required Now?

Have Sims 3 on the app on my laptop and have been afraid to switch over. Yesterday it gave me no choice so I hit the button. Better to just get it over with, right? To my surprise it downloaded pretty quickly and all my packs transferred over. Most of my store stuff is there. Just missing some patterns and a few items. I played and was pleased that it ran well.
Will be checking on what is missing today. But so far so good.