https://qooah.com/2012/04/04/samsung-%e5%b0%87%e6%8e%a8%e6%b5%81%e5%8b%95-apps-%e5%bb%a3%e5%91%8a%e6%9c%8d%e5%8b%99%e8%88%87-apple-%e5%8f%8a-google-%e5%b1%95%e9%96%8b%e7%ab%b6%e7%88%ad/