Qtalk is built entirely using open, well-established technologies. Here is what each component does and why it was chosen.
Powers the Android (and future iOS) mobile app. React Native is used by Facebook, Instagram, and Microsoft Teams for their mobile apps.
How it works
Compiles into a native Android APK that runs directly on your device. It does not run inside a browser — it is a real app with real native performance.
Runs on our private AWS server and handles all API requests — login, messages, meetings, tasks, and more. Used by LinkedIn, Netflix, and Uber.
How it works
When you send a message, it goes to our Node.js server which encrypts it, stores it in our database, and delivers it to the recipient. Nothing passes through any external server.
Enables instant message delivery without refreshing. This is the same technology used by WhatsApp and Slack for real-time communication.
How it works
Maintains a persistent encrypted connection between your app and our server. When someone sends you a message, it arrives in under 100ms without any polling.
Stores all messages, user profiles, and application data on our private server. PostgreSQL is used by Apple, Instagram, and the UK Government.
How it works
All data is stored encrypted on our AWS server in Mumbai. No employee data is ever written to any external database or cloud storage outside our infrastructure.
Every message is encrypted before leaving your device and decrypted only on the recipient's device. Used by banks, militaries, and governments worldwide.
How it works
AES-256 uses a 256-bit key — there are more possible keys than atoms in the observable universe. Even our own server cannot read your messages without the app key.
Delivers message notifications when the app is in background or closed. Uses Firebase Cloud Messaging — Google's standard notification infrastructure.
How it works
Our server sends a notification token (not the message content) to FCM. FCM wakes up your app which then fetches the message from our encrypted server. The actual message content never passes through Google's servers.
QualTechEdge's private server runs on AWS EC2 in the Mumbai region (ap-south-1). Files are stored in our private AWS S3 bucket — inaccessible to anyone outside our team.
How it works
The server is exclusively managed by QualTechEdge infrastructure team. AWS provides the hardware, but all data, access controls, and configurations are fully owned and controlled by us.
All communication between your device and our server is protected by HTTPS with a valid SSL certificate — the same padlock you see on banking websites.
How it works
TLS 1.3 encrypts all data in transit. Even if someone intercepts the connection (e.g., on public Wi-Fi), they would see only unreadable encrypted data — not your messages or credentials.