Blackphone makers Silent Circle take on the likes of Skype and Viber with a global encrypted VoIP service providing members with private communications, even with people "outside the Circle" on any mobile device or landline.
Pitched at businesses and privacy-conscious consumers, the service allows encrypted voice calls to non-subscribers in 79 countries at the calling party's standard long-distance rates.
"Silent Circle’s Out-Circle encrypted international calling plans are a major step forward in bringing private encrypted communications capabilities to all corners of the world,” the company says. “Out-Circle Calling provides a low-cost, private alternative to traditional mobile calling plans that everyone from your neighbour to traveling multinational executives can use."
The privacy comes at a cost-- $12.95 for 100 minutes, $19.95 for 250 minutes, $24.95 for 500 minutes and $39.95 for 1000 minutes.
To make calls, Silent Circle members need to use the Silent Phone iOS/Android app. Silent Circle also offers secure videconferencing on Windows PCs with the Silent Phone for Desktop client, while a Silent Text app allows members to exchange private, self-destructing mobile massages and attachments.