Mixpanel is service for tracking app and site usage, similar to Google Analytics. It can track app actions and user behavior, along with stats like device, region, etc.
This is probably an aggregate of device usage among all of their customer's data.
[+] [-] linkeex|11 years ago|reply
[+] [-] LastZactionHero|11 years ago|reply
This is probably an aggregate of device usage among all of their customer's data.