# Cellcrypt — Quantum Secure Calls & Chat

> Quantum Secure Calls & Chat (iPhone/iPad app by Communication Security Group Pty Ltd.)

- Source: https://appshunter.io/ios/app/cellcrypt/id6803158388 (this page in markdown: same URL + `.md`)
- Developer: [Communication Security Group Pty Ltd](https://appshunter.io/developer/6803158390)
- Category: Business, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 179 MB
- Languages: American English
- Released: 2026-09-01
- Data updated: 2026-09-11
- User reviews in markdown: https://appshunter.io/ios/app/cellcrypt/id6803158388/reviews.md

## What is Cellcrypt?

Calls no one else can hear.

Cellcrypt is end-to-end encrypted voice, video, messaging and file sharing for organisations that cannot afford to be overheard. 

Governments, militaries and enterprises use it to protect the conversations that matter most - on any network, anywhere in the world.

READY FOR THE QUANTUM ERA
Adversaries are recording encrypted traffic today to decrypt it once quantum computers mature. Cellcrypt closes that window now. Every session is protected by a four-part key exchange combining classical elliptic-curve cryptography with two independent post-quantum algorithms — CRYSTALS-Kyber and Classic McEliece. If one is ever broken, the others still hold.

CALLS NO ONE ELSE CAN HEAR
Crystal-clear HD voice, sealed handset to handset. Encryption keys are generated on your device and never leave it - not to Cellcrypt, not to a carrier, not to a cloud provider.

SEND ANYTHING. LEAK NOTHING.
Messages, photos, video and documents of any type, up to 5GB per file - encrypted in transit and at rest on the device. 

ONE SECURE LINE FOR THE WHOLE TEAM
Encrypted group calls and conferencing, plus secure group messaging. Everyone protected, end to end.

WORKS WHERE NETWORKS BARELY DO
Optimised for satellite, tactical and congested networks. Secure voice down to 12Kb/s. Compose messages offline and they send automatically the moment you reconnect. Built for austere environments, not just office Wi-Fi.

BUILT FOR SERIOUS SECURITY TEAMS
- Kill Code duress PIN wipes the local database instantly
- Remote wipe and licence revocation from the Enterprise Management Portal
- Mutual authentication between every endpoint
- PBX and desk phone interoperability 
- PKI-less or integrated with your existing PKI

WHO USES CELLCRYPT
Defence and intelligence. Diplomatic missions. Law enforcement. Executive teams, legal counsel and M&A advisors. Critical infrastructure operators. Anyone whose conversations are a target.


## Version history (last 3 releases)

### 5.0.105 — 2026-09-05

- Notification grouping
- Message sound notifications

### 5.0.104 — 2026-09-04

- bug fixes and stability improvements

### 5.0.103 — 2026-09-03

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-11.*