Dencrypt Connex protects your mobile conversation using the patented, state-of-the-art Dynamic Encryption technology. End-users exchange end-to-end encrypted voice calls and messages over insecure infrastructures, such as mobile networks, and public WIFI-networks.

Dencrypt Connex combines advanced cryptographic technologies with user-friendly operation. Connex works from commercially available smartphones without a need for additional hardware.

Dencrypt Connex supports an individual, centrally managed phonebook to ensure that only trusted user can communicate.

Dencrypt Connex is the trusted choice. The solution is developed and produced entirely in Denmark and is Common Criteria certified (EAL4+).

Dencrypt Connex communicates via the Dencrypt Server System, which is also Common Criteria certified (EAL2+).

Functional features:
• Encrypted voice calls and instant messages.
• Group calls and group messaging.
• Content sharing: Photo, video, audio, location.
• Time-constrained messages.
• One-touch emergency message.
• Easy-to-navigate phonebook including favorites.
• Call history
• Excellent audio quality.

Security features:
• End-to-end encrypted voice calls and messages:
o AES-256 + Dynamic Encryption in GCM mode.
• Key management ensuring perfect forward secrecy.
o Voice calls: Key exchange using DTLS-SRTP
o Messages: Key exchange X3DH and Double Ratchet
• Secure storage of chat history and phonebook
o AES-256 + Dynamic Encryption (GCM)
o Dual keys stored on server and device.
• Encrypted push notifications
o AES256 (CFB)
• Secure provisioning of new users.
• Individual, centrally managed phonebook to ensure only trusted.
• Mutually authenticated server connections using TLS1.2.

What’s New

Version 5.0.9

Version 5.0.9
This is a maintenance release fixes a couple of issues that were reported.

In case you missed the last major release
Version 5.0.4

Dencrypt Connex is the next-generation solution for secure mobile communication and replaces Dencrypt Talk.
Dencrypt Connex offers secure voice calls and messaging in a single application with a new, improved user interface.
From a security perspective, the most notable improvements are:
• Key exchange for voice calls supports automatic authentication eliminating the need for an oral exchange of authentication codes.
• Message exchange featuring both end-to-end encryption and forward secrecy.


38.5 MB

Requires iOS 13.0 or later. Compatible with iPhone, iPad and iPod touch.



Age Rating
This app may use your location even when it isn't open, which can decrease battery life.


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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