I've been in doubt now about PushNotification and if that's really what I want. To solve my problem do I need PushNotification ? See, what I want is this: When the user (seller) changes the flag of the database, this indicates that this seller is requesting a discount greater than what he can grant. That way, those who have this power will not stay in the stores, but in the matrix and these people will receive in their smartphone information to open the App and Approve / Deny this discount. Can I say that this is by PushNotification or is there another way to do it?