Have the original galaxy watch which uses Tizen software and now this one with the new wear OS. Wear OS does have more 3rd party apps due to play store, however I find navigating Tizen more intuitive. I love the hardware, it's classy and feels light on my wrist. Being able to measure body comp pretty cool also. Battery life is okay, neither better or worse than other smartwatches. The biggest disappointment for me which I hope gets rectified, is at this time Sep 14 2021, no internet browsers are compatible with this watch - hence I'm keeping my old one for the time being. I love being able to browse the net on my watch. Had I known this I would not have purchased. My recommendation is to wait until software platform matures a little if this feature is important to you.