Great Program On Samsung Galaxy Nexus OS ICS 4.0 it works well, and even using the 'phone as a sextant I got within 1 degree of actual position, useful as back up celestial calculator; great communication with developer. Note you can reverse CW or CCW star chart as you wish.
Polyglotz has released SilenceByFaceDown V1.7 to the Android Play Store and Amazon App Store. This is a simple app that allows users to quickly turn off their phone ringing during a company meeting or any event that requires silence (public library, school classes, theater, etc). It is much simpler for one to flip the phone face down on a table to turn off the sounds than to go into phone settings to disable the sounds.
More information about SilenceByFaceDown can be found here.