Signal 2.0 — Free iPhone App for Encrypted Calls and Texts

An open source software group, Open Whisper Systems, has announced the release of Signal 2.0 — the second version of its free and open source messaging application for iPhone and iPad users.

Signal app is specifically designed to make secure and easy-to-use encrypted voice calling. But that’s what the application was providing in its previous release introduced last July with Signal 1.0.