With Google hangout first minute of your call will be free ,this is applicable for 25 countries,and India is one of them
Get get your free minutes just add some credits to your hangout account
Hangout dialer –https://play.google.com/store/apps/details?id=com.google.android.apps.hangoutsdialer
Calls where the first
minute are free(25 countries) will say, “First
minute free” on the call screen. If
you don’t see this message, you’ll
be charged for the first minute.