I would infer that the elf app is a app for you to call your servant. I would like to use this app because when I would get hungry I could just call my elf servant and tell them I am hungry. Instead of calling your elf servant's name I could just use the app to get ther elfs attention. In my opinion I think that this app would be very important. If people had this app I think that it would be used a lot.
