Currently I use "Facebook Analytics for Apps" to measure my iOS app activities and active users. However, I do not want my app to be visible in Facebook search (App section) which reveal the number of monthly active users.
If I turn off public in facebook developer page - (please see image). Will my "Facebook Analytics for Apps" continue to work?
PS: I am not using Facebook Login. All my users signup/login via phone number
Facebook Analytics for apps will continue track your events, even if the app is not public. I guess you are using Facebook Account Kit https://developers.facebook.com/docs/accountkit for the user signup/login via phone number. By doing so, this will provide you better insights about your App users demographics.