Chat & Messaging App Development
Last updated: February 2026
A WhatsApp-style real-time messaging app with one-to-one and group chat, media sharing, voice and video calls, presence, and end-to-end encryption.
Technologies Used:
Overview
We build a complete real-time chat and messaging app with native iOS and Android clients, a realtime backend, and an admin console for moderation and analytics. The build covers one-to-one and group messaging, media and file sharing, voice and video calling, typing indicators, online presence, read receipts, push notifications, and encrypted message delivery. It is built for startups and businesses launching a branded messenger, a community app, or in-app communication for an existing product.
What's Included
What We Need From You
- 1Feature list and which chat behaviors matter most to you
- 2Branding assets and any design references
- 3Decision on authentication method (phone, email, or social)
- 4Push notification credentials (APNs and FCM) or app developer accounts
- 5Any existing backend or user database to integrate with
Frequently Asked Questions
How do you guarantee messages arrive in real time?
We use persistent WebSocket connections backed by Redis for message routing and presence, with offline queueing and push notifications as a fallback. This keeps delivery instant when users are online and reliable when they reconnect.
Is end-to-end encryption included?
Yes. We implement end-to-end encryption so messages are encrypted on the sender's device and only decrypted on the recipient's, meaning even the server cannot read them. It is included in the Professional and Enterprise tiers.
Can it support voice and video calls?
Yes. We build voice and video calling on WebRTC for low-latency peer connections, with group calling available in the Enterprise tier. We also handle the signaling server and TURN setup needed for calls to work across networks.
Will it scale to a large user base?
Yes. We design the realtime layer to scale horizontally so connections, message throughput, and presence keep up as your active user count grows. The Enterprise tier includes infrastructure tuned for high concurrency.
How long does it take and do you publish to the stores?
A core messaging MVP takes around four to six weeks, while a full-featured messenger with calls and groups takes eight to eleven weeks. We handle App Store and Play Store submission and publishing on the Professional and Enterprise tiers.
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Ready to Get Started?
Let's discuss your project requirements and provide you with a custom quote tailored to your needs.