Viber Download for Free - 2021 Latest Version Viber Overview With so many Instant Messaging and VoIP apps available, what makes Viber so special and do you really need it? For starters, there are over a billion people using it worldwide. This is important because Viber texts and calls are only free when it’s a Viber-to-Viber communication. Some other highlights include: High-quality video and audio calls All calls and messages are securely encrypted Create groups Sync mobile and desktop apps Transfer calls from mobile to desktop Send emoji’s, GIFs, and files Free video and audio calls to other Viber users around the world? No problem. Insanely cheap prices to make international Viber to Phone calls? It does that also. Secret chat messages that will self-destruct after being read? Viber has that feature. Set up a local phone number in the US, UK, and Canada that will receive phone calls and SMS messages for a flat low rate. But is Viber Really Secure?