How to calibrate Night Sky 2 according to the actual sky I'm looking at?

I recently purchased the night sky 2 app on my iPhone 5 because we're constantly stargazing and quarrelling over which star is which. The app says to calibrate it we must move the phone away from any interference or move the phone in a figure of eight. Is there a way of using location services and the app to find stars using my current location?

I'm not sure of particular application but any night sky program requires You to feed your location latitude and longitude and local time. Also the difference between UT and your local time.
Read the help YOu may add the altitude of your location