# Dark Message Crypto Chat — Encrypt messages files offline

> Offline encrypted messaging and file sharing with AES-256-GCM. (iPhone/iPad app by aleksandr bronnikov.)

- Source: https://appshunter.io/ios/app/dark-message-crypto-chat/id6760596467 (this page in markdown: same URL + `.md`)
- Developer: [aleksandr bronnikov](https://appshunter.io/developer/1885003900)
- Category: Utilities, Productivity
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.0 · 1 MB
- Languages: American English, Russian
- Released: 2026-03-22
- Data updated: 2026-06-09
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/dark-message-crypto-chat/id6760596467/reviews.md

## What is Dark Message Crypto Chat?

Dark Message Crypto Chat — encrypt your messages, photos, and documents completely offline. No internet required.

HOW IT WORKS:
1. Create a chat and set a secret passphrase
2. Encrypt text, photos, or documents
3. Share the encrypted message through any app
4. The recipient decrypts it using the same passphrase

WHAT YOU CAN ENCRYPT:
• Text messages and conversations
• Photos and images
• Documents: PDF, Word, Excel, PowerPoint, TXT, ZIP, and more

ENCRYPTION:
• AES-256-GCM — military-grade encryption
• PBKDF2 key derivation — brute-force protection
• Unique key derived for every message

SECURITY:
• No internet permissions — your data never leaves your device
• Passphrases stored in iOS Keychain (hardware-protected)
• Open .darkm format for encrypted file transfer
• No registration, no accounts, no servers

PERFECT FOR:
• Protecting private conversations
• Secure transmission of confidential documents
• Encrypting photos before sharing
• Corporate security and compliance

## Key features

- Offline encryption for messages, photos, and documents
- AES-256-GCM military-grade encryption
- PBKDF2 brute-force protection
- No internet permissions
- Secure passphrase storage in iOS Keychain
- Supports various document types

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/dark-message-crypto-chat/id6760596467/reviews.md

### 5/5 — Отличная идея

*2026-03-22*

Кириенковские выкормыши расстроиятся такому софту. Отлично зайдет для нацмессенджера. Спасибо разработчикам

## Frequently asked questions about Dark Message Crypto Chat

### What is Dark Message Crypto Chat?

Dark Message Crypto Chat is a utility app that allows you to encrypt messages, photos, and documents completely offline. It uses military-grade encryption to protect your data before you share it through any messaging platform.

### How does Dark Message Crypto Chat work?

You create a chat, set a secret passphrase, and then encrypt your content. The encrypted message or file can be shared via any app, and the recipient uses the same passphrase to decrypt it.

### What types of files can be encrypted with Dark Message Crypto Chat?

You can encrypt text messages, conversations, photos, images, and various documents including PDF, Word, Excel, PowerPoint, TXT, and ZIP files.

### Is Dark Message Crypto Chat secure?

Yes, it uses AES-256-GCM encryption, PBKDF2 key derivation for brute-force protection, and has no internet permissions, meaning your data never leaves your device. Passphrases are stored securely in the iOS Keychain.

### Does Dark Message Crypto Chat require an internet connection?

No, a key feature of Dark Message Crypto Chat is that it operates completely offline. No internet connection is required for encrypting or decrypting your messages and files.

### Is Dark Message Crypto Chat free to use?

Yes, Dark Message Crypto Chat is available for free. There are no in-app purchases or subscription fees associated with its use.

### What devices is Dark Message Crypto Chat available on?

Dark Message Crypto Chat is currently supported on iPhone and iPad devices.

### How often is Dark Message Crypto Chat updated?

The app was last updated on March 22, 2026, with version 1.0. Information on update frequency beyond this initial release is not yet available.

## Version history (last 1 release)

### 1.0 — 2026-03-22

No release notes.

## More apps by aleksandr bronnikov

- [Engineering Calculator HVAC](https://appshunter.io/ios/app/engineering-calculator-hvac/id6760564633)

All apps by aleksandr bronnikov: https://appshunter.io/developer/1885003900

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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 2026-06-09.*