iPhone系统版本占比
https://developer.apple.com/support/app-store/
https://david-smith.org/iosversionstats/
iPhone国内市场占比
http://compass.umeng.com/trend#hardwareList
https://www.jiguang.cn/reports/283
国外
https://mixpanel.com/blog/2018/09/11/launch-events-iphone-historical-data-apple/
https://mixpanel.com/blog/2018/09/10/12-graphs-and-9-questions-about-the-2018-apple-launch/
App排名
https://www.qimai.cn/
原文：https://blog.csdn.net/heqiang2015/article/details/82982380