Statcounter does not differentiate unique users like some other web analytics company. If you have ten users of one platform vs. ten users of another platform, and users of Platform A use the browser more often to hit the same websites than the same number of users at Platform B, Platform A will get a larger market share. That's why Android and Windows have been tossing the market lead for market share, but Windows PCs will only sell 50 to 60 million devices each year while Android devices will do 250 million to 300 million devices each year. Users that don't use the web on their devices, like those that stick mainly to games, messaging or social media apps is not going to be registered, and if they are using those web browsers, it has to be one of those websites that is using Statcounter for their analytics. That excludes websites that don't use Statcounter --- which are plenty --- and websites of major companies that don't need Statcounter, like Google, Tencent, Facebook, YouTube, QQ, WhatsApp, WeChat, etc,.
Its already been established that iOS users are more active as web users, as they are bought with data contracts, while many Android devices are sold without contracts, and are using more limited prepaid data plans.
I prefer to use shipment trackers.