Samsung drops Android for Tizen in new Gear 2 smartwatches | The Verge. The first version of Gear only worked with a couple of Samsung Galaxy phones. This lack of compatibility with other manufacturers was a stumbling block for sales. The new Gear 2 watches will run Tizen, a simpler OS which Samsung says will be compatible with "dozens" of Samsung products. As far as app compatibility with Gear 1, that remains to be seen. I am still happy with my Gear, even though it is thicker and bulkier than the new ones. And, my battery life is great, since I keep it in the charging dock overnight. So, I may wait a while to buy a new one; but, if any of you want to buy me one, I will be happy to try it out. They will be available in April.