Global
The global tab in iStat Menus contains settings that affect the entire app. These include the overall menu bar theme, the dropdown menu theme, how frequently iStat Menus refreshes stats, and how much spacing is around menu bar items.

Menu bar and dropdown theme #
The top portion of the theme carousel controls the theme for all menu bar items. The bottom portion of the theme carousel controls the theme for all drop down menus. Click a theme or use the scroll gesture to change theme.
Menu bar spacing #
iStat Menus’ menu bar items can have standard spacing between items, or compact (smaller) spacing. Standard spacing matches other system menu bar items. Compact spacing is even smaller. Please note that compact can’t be used if you have multiple displays attached.
Update frequency #
The update frequency controls how frequently iStat Menus updates various stats. A quicker update frequency samples stats more regularly. A slower update frequency uses slightly less resources.