Offline Secure Communication

Stay Connected
Even Offline

MOSA Messenger is a military-grade secure offline mesh communication system. Connect without internet or GSM networks using standard smartphones or Gateway devices.

About Us

Our Vision & Mission

Vision

A decentralized and democratic world where people can communicate freely and securely even when internet infrastructure is unavailable, restricted, or collapsed.

Mission

To develop a flexible, user-friendly mesh communication system with military-grade security that does not require traditional infrastructure.

Core Values

Offline-First

System must be fully functional without internet or GSM networks

Military-Grade Security

All communication encrypted end-to-end using modern cryptography standards

Decentralized

No dependency on a single authority or server

User Experience

Intuitive interface similar to popular messaging apps

Flexibility

Modular architecture responding to different range, speed, and cost needs

Features

Powerful Features

Everything you need for secure offline communication

Military-Grade Security
End-to-end encryption with Ed25519 and ChaCha20-Poly1305. Zero-Knowledge architecture ensures complete privacy.
Offline Mesh Network
Works without internet or GSM. BLE, LoRa, and FSK protocols for different range and speed needs.
WhatsApp-Like Experience
Familiar interface with group messaging, voice messages, location sharing, and file transfer.
Gateway Support
Extend range with Gateway devices. From Lite to Pro models for different use cases.
ACFR Algorithm
Proprietary Adaptive Congestion-Free Routing prevents network congestion even under heavy load.
No Hardware Required
Start with just your smartphone. No additional hardware needed for basic mesh communication.

Communication Models

Choose the model that fits your needs

Model 1: BLE Mesh

No Hardware Required

Start communicating immediately with just your smartphone. No additional hardware needed.

Features

  • Direct device-to-device communication
  • 30-50 meter range
  • Text, location, and reactions
  • Zero cost - just your phone
  • Low power consumption

Limitations

  • Short range (30-50m)
  • Text only (no media)
  • iOS background limitations

Model 2: Gateway Lite

Extended Range

Extend your range to kilometers with a budget-friendly Gateway Lite device.

Features

  • 1-5 km range with LoRa
  • BLE ↔ LoRa bridge
  • Autonomous operation
  • ~24 hour battery
  • Text and location sharing

Limitations

  • Text only (no media)
  • Requires Gateway Lite hardware

Model 3: Gateway Pro

Full Features

Professional-grade communication with voice, media, and high-speed mesh networking.

Features

  • 300m-1km range (FSK)
  • Voice calls (PTT)
  • Media sharing
  • High-speed mesh
  • Auto protocol switching

Limitations

  • Requires Gateway Pro hardware
  • Higher cost

Model 4: Gateway Platinum

Dual Transceivers

Ultimate range and bandwidth with simultaneous dual-frequency FSK operation.

Features

  • Dual CC1101 transceivers
  • Cross-band repeating
  • Advanced mesh routing
  • Extended range
  • Standalone operation

Limitations

  • Requires Gateway Platinum hardware
  • Premium cost

Model 5: Internet Gateway

Global Connectivity

Connect your mesh network to the internet while maintaining full control and privacy.

Features

  • Bridge to WhatsApp/Telegram
  • Full control over gateway
  • Open-source software
  • Custom configuration
  • Enhanced privacy

Model 6: Vehicle Hub

Automotive Integration

Designed for off-road convoys and overlanding with integrated touchscreen and vehicle power.

Features

  • 7-inch touch display
  • Vehicle power integration
  • Apple CarPlay / Android Auto
  • High-gain external antennas
  • GPS tracking & routing

Limitations

  • Vehicle installation required
  • Highest cost

Download MOSA

Available for iOS and Android

Download on the App Store

Get MOSA for iPhone and iPad

Get it on Google Play

Download MOSA for Android devices

Direct APK Download

Download the latest APK directly (v1.0.0-alpha+3, Build 3)

Released: 2026-02-12 206.3 MB
Download APK