It is a very simple and smooth phone calling android app. No annoying registration process every time, no username or password to remember, and no buddy list to create.
# Make unlimited free phone calls to anyone over WiFi, 2G/3G/4G data network without using any call minutes
# Invite you family members and friends to use this app for free calls and start saving money now.
# Free Calls to any mobile phone numbers in over the world. Caller ID is supported so that your friends know who is calling.
All communication between this app users is entirely free of cost wherever you and they are.