The PlayStation Communities app has released for both iOS and Android devices. The app will make it easier to find and keep in contact with other PlayStation 4 users when you are away from your console.
PlayStation Communities allows you join communities or groups, and while in a community you can do various things such as talk to other members, join parties, and launch games. The app provides recommendations based on what games you have played and which communities happen to be trending.
Communities may come in handy if you are having trouble with a game such as the recently released Final Fantasy XV. By joining a Final Fantasy community, you may be able to receive help from other players and if enabled, receive push notifications when someone replies to your help request.