Important: Voice Cypher Ultra will cease working within 5 days after install without a valid trial or purchased license. Voice Cypher Ultra is only available to business and government users after a screening process and is not available to individual consumers.

Businesses and Governments worldwide trust Voice Cypher Ultra to protect their communications.

Voice Cypher Ultra is the gold-standard for secure, encrypted communications for mobile devices, tablets, and desktops. Combining the ease of use of a consumer messaging app with military-grade encryption, Voice Cypher Ultra enables secure voice and conference calls, instant messaging and file/document sharing between any Voice Cypher Ultra enabled device. Voice Cypher Ultra uses a unique double-layer end-to-end crypto scheme, with new session keys for each call and message, affording all users military-grade, secure communications.

Secure Phone Calls
Voice calls are fully encrypted end-to-end and are routed through the mobile device’s data connection. Voice Cypher Ultra works across any IP-enabled network; e.g., 2.5G (GPRS, EDGE, CDMA 1xRTT), 3G (UMTS, HSDPA, CDMA EV-DO), 4G (LTE), 5G, Wi-Fi and Satellite. Voice Cypher Ultra’s adaptive voice codecs ensure low data and battery use, with no degradation of voice quality with full authentication to eliminate the risks of impersonation through Caller ID spoofing.

Conference calling
Voice Cypher Ultra’s Conference Calling is a cost-effective way to take the complication out of group calls. Make secure, encrypted conference calls whenever you want, from your mobile or desktop, leveraging your existing infrastructure for seamless, immediate collaboration.
Secure group calls can be set up instantly from your contacts list on mobile or desktop, eliminating the need to arrange through a third party or issue PINs/passwords.

Secure Instant Messaging
Secure messages can be sent between smartphones, tablets, and desktops while ensuring the privacy of conversations. Group messaging can also be set up at will and can be defined locally by the user or centrally by the organization with total security and control.

Document and File Sharing
Voice Cypher Ultra allows users to securely share photos, videos, voice clips, documents, and file attachments of any size, providing a secure alternative to unprotected email communications.

Military Grade Encryption
Voice Cypher Ultra provides Signal Obfuscation and true end-to-end Suite B grade cryptography (the NSA cryptographic standard for protecting US Classified information up to Top Secret) to protect against call interception and eavesdropping.
Messages and file transfers are also encrypted end-to-end to ensure privacy. Voice Cypher Ultra has been twice validated to the FIPS 140-2 standard, approved by the US National Institute of Standards & Technology (NIST).

*Application may not be used for emergency calls.

What’s New

Version 3.85.5

What's new:
- Improvements to the onboarding pages
- Improvements to call quality and stability
- Minor improvements to the settings pages
- Support for custom servers that require port specification
- Added status indicator on key exchange messages

Bug fixes:
- Fixed an issue that would prevent calls from starting
- Fixed an issue with presenting the duration of calls that lasted over an hour
- Fixed an issue that would sometimes not present the call banner when navigating out of the call screen
- Fixed an issue that would sometimes prevent a new message banner from appearing
- Fixed some possible crashes
- Fixed a broken link in the end user license agreement
- Fixed not being able to share web pages with the app
- Fixed sometimes not being able to record voice notes
- Minor fixes to the call rating dialog
- Minor UI fixes

Ratings and Reviews

5.0 out of 5
1 Rating

1 Rating

App Privacy

The developer, Cellcrypt Inc., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

  • Siri

    Get things done within this app using just your voice.

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