Re: Will Sims 3 and 4 content be on EA App
@pipandboo All the Sims 3 and Sims 4 content that now appears in Origin should also appear in the EA App. You won't have to buy anything again, and you also shouldn't need to download either game: the App recognizes already installed Origin games. However, I would suggest installing the App and checking your game library to make sure nothing is missing, sooner rather than later, so you have time to deal with EA customer support if necessary.
Installing the EA App will uninstall Origin, but you can reinstall it using the link in this post:
Your Sims 3 worlds will still need to be installed through the Store site. Right now, the EA App isn't properly recognizing store content all the time, so I'd definitely suggest staying with Origin for now.