Gear Fit is compatible with android phones as advertised but if you don’t have a Samsung phone, most features are useless unless you enjoy hacking and tinkering forever to get one thing to work. I even have a Samsung tablet, it can communicate basic data to the tablet but the S gear apps are not compatible with the tablet. Basically don’t buy this unless you have a Samsung S5 or better Samsung phone. It is a challenging and possibly non working experience for non Samsung smartphone owners.
And other than all these facts it is A bit more costly than others in the market.
Otherwise its a great product in functionality with samsung smartphones specially.