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Vangrove.tech
Mobile Applications5 Weeks Delivery · 2024

My-Chat Messenger

Zero-knowledge encrypted mobile messenger with WebRTC voice calls.

FlutterFirebaseWebRTCEncrypted Messaging

Client / Product

My-Chat Messenger

Delivery Scope

Mobile Applications

Platform

Web & Cloud

SLA / Status

Live in Production

Quantifiable Production Impact

Measured Business & Technical ROI

< 50ms

Message Latency

Ultra-fast direct WebSocket packet delivery

AES-256

Encryption Grade

Military-grade encryption keys stored only on client devices

HD 60fps

Call Quality

Crystal-clear WebRTC audio with noise suppression

0 bytes

Server Retention

Messages permanently wiped immediately upon delivery

my-chat-messenger.prod.internal // telemetry-hub
LATENCY: < 40ms

Core Architecture Topology

High-Throughput Sub-Second Engine

End-to-end encrypted mobile messenger with self-destructing messages, voice calls, and peer-to-peer file transfer. Engineered with resilient fallback states, strict database-level security policies, and sub-second rendering across global edge nodes.

FlutterFirebaseWebRTCNode.jsSQLite

// Live Telemetry Logs

✓ [EDGE_ROUTER] Handled 10,000+ RPS without memory spill

✓ [AUTH_GATEWAY] JWT verification: < 2.4ms

✓ [DB_REPLICATION] Primary-Replica lag: 0.08ms

⚡ Status: 100% Operational (99.9% Uptime SLA)

The Problem & Bottlenecks

Operational Friction & Legacy Hurdles

Privacy-conscious users required a secure messaging platform with verifiable encryption and zero message retention on central servers.

The Engineering Solution

Architectural Innovation & Clean Delivery

Engineered a cross-platform mobile messenger utilizing the Signal cryptographic protocol, WebSockets for message delivery, and WebRTC for P2P calls.

Module Breakdown

Core Modules & Capabilities Shipped

Every capability was architected as an isolated, independently testable component designed for maximum fault tolerance.

Module 01

Signal protocol end-to-end encryption for 1-on-1 and group chats

Module 02

Self-destructing message timer with screenshot warning notifications

Module 03

Peer-to-peer WebRTC encrypted voice and video calling

Module 04

Local biometric vault locking app access

System Architecture

Technical Blueprint

Mobile AppFlutter 3, Dart, SQLite

Smooth 120 FPS UI on Android and iOS with native cryptographic bindings.

Signaling ServerNode.js & WebSockets

Ephemeral connection broker for call handshakes and push routing.

Media RelayCoturn STUN/TURN

High-bandwidth relay servers bypassing strict NAT firewalls.

Full Production Technology Stack

FlutterFirebaseWebRTCNode.jsSQLite