Kryptotel is an open source application to make ENCRYPTED Voice and Video calls
It does use RSA 8192 bits algorithm and TLS protocol to encrypt the signals communication (caller id /called id for example), and AES 256 bit with ZRTP protocol to encrypt the audio/video communication.
Kryptotel allows to make mobile voice and video calls that cannot be intercepted.
Kryptotel allows the sending of encrypted text messages, pictures and video recodings.

It allows a high voice quality without delay even when it is used on mobile networks 3g/4g and satellite.
Kryptotel works on every wifi/mobile 3g/4g/satellite network and everywhere there is an Internet connection.
The application is ready to be used just after the download without any configuration or registration of personal data.
To make encrypted calls both parties should use Kryptotel but you can make calls with improved privacy to normal phone numbers as well (this is a paid per call function!)

Kryptotel secure voip is available with this in-app purchases:
- Unlimited calls - USD 2.99/month or USD 18.99/year for unlimited calls to other Kryptotel number;
- Per Minute - you can top up your credit to make call to any number ( https://securevoip.kryptotel.net/pricing/ for details).
- Payment will be charged to iTunes Account at confirmation of purchase;

- Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period;
- Account will be charged for renewal within 24-hours prior to the end of the current period;
- Subscriptions may be managed by and auto-renewal may be turned off by going to menu “File”,”Account” after purchase;
- No cancellation of the current subscription is allowed during active subscription period;
- Any unused portion of a free trial period, will be forfeited when you purchase the subscription.

Privacy Policy: https://www.vpnoneclick.com/privacy-policy/
Term of Use: https://www.vpnoneclick.com/terms-of-use/
Fair Usage Policy: https://securevoip.kryptotel.net/fair-usage/