Ringring.io on iOS - 电话和消息App

Ringring.io (http://www.ringring.io) is a Phone and Messaging application built for privacy with open architectures. You can originate calls and send messages in an easy and secured way with no data-collecting man or company in the middle. The technology is freely available for public.

Ringring on iOS is based on Liblinphone, free SIP VoIP SDK and first you need to prepare your system to build it.

Github: https://github.com/ringring-io/ringring-ios