Larian Studios Forums Baldur's Gate III Baldur's Gate III - Help Tips & Tricks Question about buying BG3

I may switch from Mac to PC in the next year, but definitely want to buy BG3 soon. Once you purchase the game, can you download and play it on either Mac or PC? From the same account and not at the same time of course.
I can find nothing on Steam or GOG about this.

Thanks.

I've installed other Steam games across multiple PC.