If you have the Arlo Ultra can you walk me through: 1) What are the notifications like? Will they wake you up at night? I want to be able to tell if someone is approaching my house at night or when I am not actively looking at my phone. 2) For multiple cameras, can you see all cameras live at once? Or do you have to open each camera individually to see the live feed? 3) does the app work on an iPad? Thanks!