APP下载趋势

2017国内APP市场，来自36氪

http://36kr.com/p/5114374.html

2017国际APP市场，来自中商情报网，好像是买了 AppAnnie的付费报告，

http://www.askci.com/news/chanye/20180119/141456116385.shtml

2018.1月国内市场，来自 AppAnnie

https://www.appannie.com/cn/insights/market-data/january-2018-index-china/

2018.1月国际市场，来自AppAnnie

https://www.appannie.com/cn/insights/market-data/january-2018-index-global/