The average USERindex across all geographies and devices in 2017 was determined to be 4.17 (the 2016 average was 4.12).

The USERindex for websites used on desktop was measured at 4.17 while that of Android and iOS apps was 4.20

The following are some averages across various industries:

Retail and Consumer durables: 4.27
Entertainment, Fashion, Sports & Lifestyle 4.17
Food and Beverages 4.24
Manufacturing 4.16
Telecommunications, Technology, Internet & Electronics 3.94