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Before it’s too late, install Noghteha from Google Play.
Noghteha is a mesh messenger that works without internet, without servers, and without SIM cards. Your phone turns into an antenna. Messages are passed hand-to-hand between phones via Bluetooth and WiFi, and each message can hop up to 7 times.
Now imagine if only 10% of Tehran’s population installs Noghteha, about one million phones. Given Tehran’s population density, the average distance between two phones would be about 25 to 30 meters. With WiFi range up to 100 meters and Bluetooth up to 50 meters, each phone connects to dozens of nearby phones, turning the entire city of Tehran into an internet-free messaging network—from Darakeh to Shahr-e Rey.
All private messages are protected with end-to-end encryption. Even phones that relay messages cannot read the content. The more people install it, the stronger the network becomes.
Download now and tell your friends to install it. When the internet is cut off, downloading won’t be possible anymore.
https://play.google.com/store/apps/details?id=com.filtershekanha.noghteha
Private mesh messenger. Works offline via Bluetooth. No account needed
Communicate freely, even when the internet is down.
Noghteha (meaning “dots” in Persian) is a privacy-first messenger that works without internet. Using Bluetooth and WiFi Aware mesh networking, your messages hop from phone to phone, creating a resilient network perfect for protests, festivals, emergencies, or areas with poor connectivity.
WORKS OFFLINE
• Bluetooth mesh networking (10-100m range)
• WiFi Aware for faster local transfers (~50m range)
• Messages relay through nearby devices automatically
• No internet, no cell service, no problem
• Optional online mode via Tor and Nostr protocol for global reach
PRIVACY BY DESIGN
• No phone number or email required
• No account registration
• No data collection or analytics
• Messages never stored on servers
• Your identity stays on your device
• BLE address rotation to prevent tracking
INDEPENDENTLY AUDITED SECURITY
• End-to-end encryption (Noise Protocol XX + ChaCha20-Poly1305)
• Forward secrecy — past messages stay safe even if keys compromised
• Argon2id key derivation for channel passwords
• Encrypted local database (SQLCipher AES-256)
• Hardware-backed key storage (Android Keystore with StrongBox)
EMERGENCY FEATURES
• Panic Mode — one tap to securely wipe ALL app data
• 3-pass secure deletion ensures data is unrecoverable
• 3-level stealth mode for reduced Bluetooth visibility
FULL-FEATURED MESSAGING
• Create and join channels (public or password-protected)
• Text messages with @mentions
• Voice notes with waveform visualization
• Image and file sharing (up to 100MB)
• Message replies and link previews
• Location-based channels to connect locally
• IRC-style commands (/join, /who, /msg, and more)
BEAUTIFUL DESIGN
• Full RTL support
• Vazirmatn font for perfect Persian typography
• Dark and light themes
• Material You dynamic colors (Android 12+)