App can be used to request a call instantly. Say you're on a bad date and want to get out of it, pull up the app and hit a button and it calls you. Or you're at work and trying to get something done but another person just wants to keep talking, hit the button and receive a call. Obviously those are just 2 examples, but there are plenty of times you need to get out of a situation and a phone call at the right time would be perfect. Maybe later on down the road, the ability to schedule a call for a specific time or in {x} minutes. What would you call an app that provided a service like that?