https://blog.wongcw.com/2020/01/22/sensortower%e7%99%bc%e5%b8%832019%e6%89%8b%e6%b8%b8%e5%b8%82%e5%a0%b4%e7%b5%b1%e8%a8%88%e9%a8%b0%e8%a8%8a%e5%8c%85%e6%94%ac%e5%85%a8%e7%90%83%e6%89%8b%e6%b8%b8%e6%94%b6%e5%85%a5%e6%a6%9c%e5%89%8d/