Your android companion for our Good Night System - the astronomical observatory safeguard.Please use this free app to check everything runs fine before purchasing the paid one. Only difference with the full version is:- limited to 30 minutes / session (an alarm will be fired after that period)- no watchdog (actually it is used for the 30 min. limit!)For more information, and to download the free Windows application, visit http://goodnightsystem.com