Decentralized mesh market and messaging based on bitchat technology. Buy, sell, and chat over Bluetooth mesh — no internet, no accounts, encrypted.
- 🛒 Mesh Marketplace: Create and browse listings with photos and prices directly over the mesh
- 💬 Encrypted Messaging: X25519 key exchange + AES-256-GCM end-to-end encryption
- 📡 Bluetooth Mesh Network: Automatic peer discovery and multi-hop relay over BLE
- 🔒 Privacy First: No accounts, no servers, no tracking — cryptographic identity only
- 📴 Works Offline: No internet, no Wi-Fi, no cellular needed
- 💬 Channel-Based Chats: Topic-based group messaging with optional password protection
- 📦 Store & Forward: Messages cached for offline peers and delivered on reconnect
- 🔋 Battery Optimized: Adaptive scanning and power management
- 🎨 Modern UI: Jetpack Compose with Material Design 3
Download from the Google Play Store.
Download the latest APK from the Releases page.
- Install MeshMarket on your Android device (requires Android 8.0+)
- Grant Bluetooth and location permissions when prompted
- The app automatically discovers nearby MeshMarket users
- Browse the marketplace or start chatting
| Command | Description |
|---|---|
/j #channel |
Join or create a channel |
/m @name message |
Send a private message |
/w |
List online users |
/channels |
Show all discovered channels |
/block @name |
Block a peer |
/unblock @name |
Unblock a peer |
/clear |
Clear chat messages |
/pass [password] |
Set channel password (owner only) |
/transfer @name |
Transfer channel ownership |
/save |
Toggle message retention (owner only) |
- Android Studio Arctic Fox or newer
- Android SDK API level 26+
- JDK 8+
git clone https://github.com/n-92/meshmarket.git
cd meshmarket
./gradlew assembleDebug# Requires keystore.properties in project root
./gradlew bundleRelease- End-to-End Encryption: X25519 + AES-256-GCM for all private messages
- Digital Signatures: Ed25519 for message authenticity
- Forward Secrecy: New key pairs generated each session
- No Registration: No accounts, emails, or phone numbers
- Ephemeral by Default: Messages exist only in device memory
- Emergency Wipe: Triple-tap logo to instantly clear all data
MeshMarket has zero tolerance for child sexual abuse and exploitation (CSAE). See our Child Safety Standards for our published standards, in-app reporting mechanism, and child-safety point of contact, in compliance with Google Play's Child Safety Standards policy.
| Permission | Reason |
|---|---|
| Bluetooth | BLE mesh networking |
| Location | Required by Android for BLE scanning |
| Camera | QR code scanning |
| Media | Photo attachments for listings |
| Notifications | Message alerts |
Built with Kotlin and Jetpack Compose. Key components:
- BluetoothMeshService: BLE mesh networking (central + peripheral roles)
- EncryptionService: Cryptographic operations via BouncyCastle
- BinaryProtocol: Efficient binary packet format optimized for BLE
- Nordic BLE Library: Reliable Bluetooth LE operations
- Foreground Service: Background mesh connectivity
Cross-platform compatible with bitchat for iOS.
Contributions are welcome! Open an issue for bugs or feature requests.
This project is released into the public domain. See LICENSE for details.