Gear Fit 2 - App for non Samsung devices - Does it lose functionality?

[AC Question]

Hi! Im going to buy a Gear Fit 2 smartband and a new phone. The thing is that I dont want to buy a Samsung phone, and i wanted to know if the app for non samsung devices (I was thinking in a Moto G 4°Gen), first, it has full compatibility, second, it lost functionality compared with the native samsung app (i want to install spotify for example),

Thanks!!