CryptoBlack Phone

Crypto Phone is an app offering secure (Crypto ZRTP) audio/video calls. You can be reachable at any time, even if the app is closed, with a WiFi or 3G/4G internet connection.

Key features:
* High definition audio and video calls
* Audio conference calls with various participants
* Accounts reachable at any time, even if the app is closed (thanks to push notifications)
* Smart contact list
* Secure communication (ZRTP encryption) peer to peer
* Compliant with a anonymous SIP-compatible VoIP service
* No records stored about you and your calls

Crypto Phone website: https://www.cryptoblack.com

You can obtain in our web (free of charge) unlimited user accounts (each account expired in 1 Month) if you need users account for 6 months, 1 year or perpetual see our special plans.

You need at least two accounts to make secure calls between two iPhones.