This is an app I wrote which takes Right Ascension/Declination coordinates and converts them to Altitude/Azimuth coordinates for use with my Dob's manual setting circles. I wrote it so I could have something which shows the coordinates in large fonts that are easy to see. It can read the GPS coordinates off the phone or lat/lon can be entered manually (decimal form).
The app has options to continually update and to keep the screen awake.
I can also create a list of objects using the form name, ra, dec