Duckvoip is a mobile application, which allowsusers to make VoIP calls from mobile phones.For using this app, endusers will need an Operator Code, which they can obtain from a VoIPService Provider.

Features:
Integration with mobile phonebook
Balance information: You can check their account balance on themobile phone screen or alternatively, they can hear account balanceinformation through IVR (Interactive Voice Response).
Aero Voice Plus supports 3G/4G, GPRS and Wi-Fi for internetconnectivity.