I want protect my playstore app from sharing for max. $5.00

in: Programming • Expected delivery ~10 days

Username: merbin2012  
Member since July 04 2013 Contact


I have a free android application in playstore(cordova), now I have create another application for pro version, I have plan to post it for RS 500 ($7.99). But I don't know how to protect this application from sharing. Can you please do it for me.