This is the pro key for the Chess PGN Master http://play.google.com/store/apps/details?id=com.kalab.pgnviewer

It removes the restrictions of the free version and enables saving and sharing games.

YOU NEED TO HAVE BOTH APPLICATIONS INSTALLED, THE FREE VERSION AND THIS PRO KEY.

Original key icon by Stephen Hutchings https://github.com/stephenhutchings/typicons.font