Each recipient has flags to determine their status for each delivery method. The mobile app has one flag which states the status of the recipients usage with the app.
Not Registered - A user has not completed the registration process
Logged In - A user has registered and is currently logged into the app
Not Logged In - A user has registered but is not logged into the app
Additionally you can search for users based off these statuses
Navigate to the Recipients Menu
Select the Filter
Scroll to Mobile App Register or Mobile App User
Select the status name from the drop down menu
Tick Search
Points to Note
If a user is not logged into the app or hasn't yet registered at the time of sending a communication, they will still receive and be able to view the communication once they log in
When searching on multiple statuses please note if you combine the search for Not Registered and Not Logged In, the result will only show Not Registered recipients as a user cannot be logged out if they have never registered