Re: Best platform to play the sims 4?
@jamm15 Do you have a Windows PC now? If so, you can install the game through Steam and then install the pack you own through the EA App as well. (Don't install a second copy of the base game.) The way this is supposed to work, the EA App-owned pack would install into the Steam base game's folder and load just as if you'd bought it through Steam.
If you're still playing in macOS, then this question is moot. The Steam version of Sims 4 is Windows-only.