ChatOk: Private Chat

ChatOk is the ultimate fortress for your communications. We have built a messaging tool where privacy isn't just a feature—it is the absolute standard. No registrations, no trackers, and zero personal footprints left behind.

🚫 Radical Privacy: Zero Personal Data
No Phone Number or Email: You do not need to link a SIM card or any personal account to start chatting.

100% Anonymous Registration: Your identity is protected by a nickname and a cryptographic key generated locally on your device.

No Tracking: Forget about ads and analytics; we do not collect metadata or sell your information.

Serverless Feel: Firebase only acts as a relay for encrypted "noise," which is deleted immediately after delivery.

🔐 Fully Encrypted Media & Files
E2E File Sharing: Send documents and files (up to 25 MB) with end-to-end AES-256-GCM encryption.

One-Shot Photos (View Once): Send ephemeral images that self-destruct automatically after being viewed by the recipient.

2-Phase Secure Deletion: Temporary photos are physically wiped from memory to ensure no forensic traces remain.

Encrypted Local Storage: Your message history on the phone is shielded by an SQLCipher database.

🛡️ Military-Grade Security
Post-Quantum Encryption (PQXDH): Protect your messages with ML-KEM-1024 and X25519 algorithms, designed to withstand future quantum threats.

Built-in Tor Routing: Stay invisible by hiding your real IP address through native Tor integration.

Double Ratchet & PFS: Every message uses unique keys; if one is compromised, your past and future history remains safe.

Dummy Traffic: Mask your real activity patterns with configurable cover traffic to prevent traffic analysis.

🎨 Premium Experience & Customization
Material Design 3: Enjoy a modern interface with 5 exclusive themes, including Midnight, Hacker, and Phantom.

BIP-39 Backup: Recover your account anytime using a secure 24-word mnemonic phrase.

App Lock: Secure your access with biometric authentication or a high-iteration PIN.

ChatOk is a transparent, open-source project (GPLv3) built for activists, security professionals, and anyone who values their digital freedom.

Your messages, your files, your privacy. Speak freely with ChatOk.