问题
How can I know or calculate an iOS app's total installs vs current devices that have the app installed?
I have the totals units and as I understand that is the total install count and not how many devices have my app right now.
回答1:
You can get more details about app statistics by using 3rd party frameworks such as Flurry. You won't be able to detect if a user uninstalls the app, but you can see how many unique users are using the app in a specific interval. You can also see which OS version your users have installed.
回答2:
use TestFlight Live for analytics and crash reports for App Store submitted app
来源：https://stackoverflow.com/questions/20996087/itunes-connect-total-installs-vs-current-devices-that-have-the-app-installed