How Should I Interpret the Technology Numbers I see in Analytics?

One of the Options listed in Analytics, is Technology, when can be accessed on the left side Analytics>Technology menu to see Device numbers for both Android and iOS, or for a total of both.

There are three options for date filtering in Technology: 7 days, 30 days, All-Time:


It is important to note that the numbers are filtering the install dates not the date the user upgraded versions.  For example, in order to interpret these numbers correctly, it is important to note that this includes both users who have installed your application, and those who have upgraded to the latest version.