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Full user review
"Not at all helpful to me"
Let's you know what your apps are up to
Doesn't indicate whether it's anything to be concerned about.
Thought it was a nuisance and uninstalled it. The things it notified me of were, best I could tell, routine, and even if there had been cause for alarm, I wouldn't have known it without researching each alert. Other users love it - they probably know a great deal more than I do!