Usage share of operating systems Usage share of operating systems The usage share of operating systems is the percentage of computing devices that run each operating system at any particular time. All such figures are necessarily estimates because data about operating system share is difficult to obtain; there are few reliable primary sources—and no agreed methodologies for its collection. In the personal computing platform area of smartphones and watches two systems dominate: Google's Android with over 2.7 billion users and Apple's iOS and macOS combined with over 1.3 billion users. In the area of desktop and laptop computers, Microsoft Windows is generally above 75% in
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