i can't answer that - i use the stick with teleboy, as the corresponding app for the fire stick is available there.
in general, not all google playstore apps are also available in the amazon app store, and the google play store can only be used if you are familiar with 'side loading' android apps.
so i would ask galaxus directly, because i probably got this question 'automatically' since i bought the stick.
i actually like the google chromecast for google tv better, but the fire stick remote is much more convenient.....