Usage share of operating systems computer's installed base statistics, and actual (web) use needs not follow installed base. Also, Microsoft includes tablets (but StatCounter may also for Windows, while it wouldn't for e.g. Android). Video game store Steam publishes a monthly "Hardware & Software Survey", with the statistics below: By Q1 2018, mobile operating systems that can be found on smartphones, include Google's dominant Android (and variants) and Apple's iOS, with both combined at almost 100% market share. According to research by InsightPortal, there is a clear correlation between the GDP per capita of a country and that country's respective smartphone OS market share, Showing
Market share of each decision on the market share of their competitors. It is generally necessary to commission market research (generally desk/secondary research) to determine. Sometimes, though, one can use primary research to estimate the total market size and a company's market share. "Market share: "The percentage of a market accounted for by a specific entity."" "Unit market share: "The units sold by a particular company as a percentage of total market sales, measured in the same units."" "This formula, of course, can be rearranged to derive either unit sales or total market unit sales from the other two variables, as illustrated