Securely encrypt messages, photos, and documents offline using military-grade encryption. Share encrypted content through any app, and recipients can decrypt it with a shared passphrase. Protect your private conversations and confidential documents without needing an internet connection.
1.3.0
September 19, 2026
The big 1.3.0 update Hand over a key in person, no internet needed • Show a QR code and read out a six-digit PIN — the chat key lands on the other phone in seconds. • The key inside the code is encrypted with that PIN, so a photo of your screen is useless to anyone else. The code disappears after a minute. • No camera at hand? Import the code from a photo in your gallery. • A key fingerprint next to every chat: the same fingerprint on two phones means the same key, with nothing read aloud. Documents arrive whole • A file that travelled through mail or a messenger now opens: stray characters added in transit are removed automatically. • A document keeps its real name, and a lost extension is recovered from the content — Word, Excel, PDF and more open right away. • An encrypted .darkm file opens straight in the app; with a single chat, decryption starts by itself. • Decrypted documents are saved wherever you choose. Nicer every day • A new icon with real depth. • Send works the first time, every time. • The app speaks your phone's language from the first launch; switching it updates every screen at once. • Fixed unreadable labels, button contrast and spacing. As always: AES-256-GCM, a key derived from your passphrase with PBKDF2 (600,000 iterations), fully offline, no network permissions. Your chats and keys are kept by this update.
MoreСпасибо за отзыв! Скоро планируем революционное обновление — Dark Message станет полноценным защищённым мессенджером. Будем рады, если будете делиться обратной связью — это помогает делать продукт лучше.
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.
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.
You can encrypt text messages, conversations, photos, images, and various documents including PDF, Word, Excel, PowerPoint, TXT, and ZIP files.
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.
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.
Yes, Dark Message Crypto Chat is available for free. There are no in-app purchases or subscription fees associated with its use.
Dark Message Crypto Chat is currently supported on iPhone and iPad devices.
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.
