Blacktone

Blacktone is a smart mobile dialer application that facilitates VoIP calling over the internet to any landline or mobile devices around the world. The application is most beneficial for making long distance or international calls at low rates utilizing the VoIP services from your favorite service provider. The zero noise, high call quality and intuitive UI makes the application most sought after VoIP calling application.
Crystal clear voice quality.Full branding option.Bandwidth saver for low bandwidth areas.Uses G729. Compatible with any switch server.Balance information.Loudspeaker.Call hold.Call history information.It work most of all android Phones.IVR.