I'm occasionally approached by developers asking about the versions of Mac OS or iOS the visitors to the site are using. Whilst you can get general information from sites like NetMarketShare or Mixpanel I guess it is useful to know what versions scientists might be using.

Over the last month the operating systems used by visitors are 60% Mac, 21% Windows, 12% iOS, 4% Linux, 2.8% Android.

Of the Mac users, 43% are now using 10.14 (Mojave), 35% 10.13 with all older versions each well below 10%

For the visitors using iOS, 71% are using 12.x, and 16% using 11.x

These figures would suggest that visitors to the site are probably among the early adopters, and that Chemistry software developers should try and ensure they support the latest versions of operating systems as early as possible.