Telegram-Style Cross-Platform Messenger

@hirujiyu

➰➰ EXPERIENCED MOBILE & REAL-TIME APP DEVELOPER (8+ YEARS) Hi there, ✋ Based on your requirements, I can build a Telegram-like cross-platform app (iOS, Android & Web) with real-time messaging, voice/video calling, and strong security from day one. I have solid experience in chat systems, WebRTC, and scalable real-time architectures. ❓ A FEW QUESTIONS: ⭕ Do you prefer Firebase-based real-time backend or custom (Node.js + WebSockets)? ⭕ Should messages support media (images, files) in the first version? ⭕ Any preference for UI style similar to Telegram or custom branding? ⚡ I follow an incremental delivery approach so you can test messaging → calling → security step-by-step. ➰ Let’s connect via chat to finalize architecture and start building immediately. Thank you.

@owebest

Hi There We will build your Telegram-like messaging app for iOS, Android, and web with a shared real-time backend so messages, private chats, voice calls, and video calls stay fully synced across devices. The focus will be on smooth communication, strong security, and a scalable architecture from day one. We will implement real-time messaging, private chat threads, WebRTC-based voice/video calling, 2FA login, optional biometric re-entry, push notifications, and an admin/CLI tool to manage users and verify security setup. We have previously built real-time communication platforms with chat, calling, authentication, and scalable backend systems, so we understand how to balance speed, reliability, and security for a production-ready launch. Once you initiate a chat, we will share a recommended stack, milestone plan, timeline, and similar real-time app examples for your review. We will also provide full source code, build instructions, staging deployment, and a concise setup guide for your team. Also, we have a few queries regarding the project: 1. Should voice/video calls support only one-to-one calls initially, or group calls as well? 2. Do you want 2FA through SMS, email OTP, authenticator app, or multiple options? Let’s connect over chat or a call to discuss further. Thanks Owebest Technologies || KD

@AwaisChaudhry

Hello, I understand you want a polished Telegram-like cross‑platform messenger with real-time sync across iOS, Android, and Web, using a single backend, and with strong security from day one (2FA and optional biometrics). My approach is to start with a solid, fast cross‑platform stack (Flutter or React Native with WebRTC and a scalable real-time DB) to deliver production‑ready apps for all three targets, plus a responsive web client. I will implement a robust sign‑in flow with 2FA + optional biometrics, plan for future end‑to‑end encryption, and deliver a modular architecture with clean project structure, clear build instructions, and a lightweight admin/CLI tool for user management and 2FA verification. I’ll propose incremental delivery so you can test features as they’re ready, with fixed milestones, staging servers, and ready docs for redeployment. What is your preferred tech stack between Flutter, React Native, or native Kotlin/Swift plus a modern web stack, considering WebRTC and scale for real-time chat? Plan: define core chat, voice/video calls via WebRTC, and private threads with synchronized state on a shared backend. Use a native-like UI to match Telegram’s feel, ensure offline resilience, and provide easy deployment guides for your in-house team. I’ll stay responsive to your feedback for rapid iteration and keep security considerations front and center from day one.

@irsolutions

With over a decade of experience in full-stack architecture and high-scale systems, I understand your need for a polished, Telegram-style cross-platform messenger application that prioritizes security and seamless user experience. My background in developing high-security systems for over 1 million users uniquely positions me to tackle the challenges of your project head-on. To ensure scalability and security, my strategic insight for this project would be to implement a robust two-factor authentication system with optional biometric login, similar to what I have successfully integrated in past projects. With a proven track record of delivering complex applications across multiple platforms, I am confident in my ability to meet and exceed your expectations for this project. I invite you to reach out to discuss your project roadmap further and see how we can work together to bring your vision to life. Let's collaborate to create a cutting-edge messenger application that sets new standards in user experience and security.

@OutsourceMan

Building a secure, reliable, and feature-rich cross-platform messenger is no novice task. Luckily, my team at CnELIndia comes highly seasoned with over 18 years of industry experience. Specializing in Flutter, React Native, Android and iOS development - your project aligns perfectly with our expertise and passion for building innovative digital solutions. Our commitment to delivering projects that not only meet but exceed client expectations has earned us a near-perfect 5-star rating on major platforms. We value your time and budget and have consistently delivered projects within both constraints. Your simultaneous launch requirement is also something we're accustomed to and can manage effectively. In terms of security, we understand your priorities well. Our strenghts include incorporating measures like two-factor authentication and biometric login methods as you've specified. With our incremental delivery approach, you can rest assured that the core functions of the app will be rigorously developed and tested for optimization before moving on to optional features like end-to-end encryption. Let's work together to create an impactful messaging tool your users can rely on!

@kamran2012

Hi, I will deliver your cross-platform messenger — real-time messaging, voice/video calls via WebRTC, private threads, 2FA, and biometric login — across iOS, Android, and web from a single Flutter codebase with a shared backend. I will architect this on Flutter with Firebase for presence/sync and a dedicated signaling server for WebRTC calls. For the real-time layer, I will use a hybrid approach — Firestore for message sync and delivery receipts, paired with raw WebSockets for call signaling — so chat stays responsive without the overhead of routing media negotiation through your database. This separation also makes adding end-to-end encryption in a future milestone straightforward, since the encryption layer wraps the message transport without touching call infrastructure. Ready to start whenever you are. Kamran

@diektech

Hi, This is Elias from Miami. I checked your project description and understand you’re looking to build a polished cross-platform messenger app similar to Telegram, enabling users to exchange messages and make voice calls. I have worked on several similar platforms and understand the key technical challenges involved. My approach would involve using React Native or Flutter for a seamless user experience across both iOS and Android, while integrating WebRTC for high-quality voice calls. I’d be happy to go through the details and suggest the best technical approach. I have a few questions to get a better understanding: Q1 – What user roles do you envision for this application (e.g., admin, regular users)? Q2 – Are there any specific features or integrations you want, like payment gateways or third-party services? Q3 – How do you plan to manage user authentication and data security? Looking forward to hearing from you.

@corpmember29

I WILL BUILD A SECURE, REAL-TIME MESSAGING APP THAT RIVALS TELEGRAM ? With 12+ years in IT and experience building real-time chat and calling apps, I can deliver a scalable, secure cross-platform solution for iOS, Android, and Web. Approach: Use Flutter/React Native + Web (React) with a shared backend (Node.js + WebSocket/Firebase) and WebRTC for voice/video calls. Focus on low latency, sync accuracy, and smooth UX. User Roles: User (chat/call), Admin (manage users, monitor), System (real-time sync & auth) Workflow: User signs in (2FA) → optional biometric login → real-time messaging → initiate voice/video via WebRTC → data sync across devices instantly. Core Features: Real-time messaging & private threads Voice & video calling (WebRTC) 2FA authentication + biometric logi Cross-platform sync (mobile + web) Scalable backend & secure APIs Admin/CLI tool for user & 2FA management Deliverables: Production-ready apps (TestFlight & internal track), full source code, clean architecture, setup guide. Timeline: 4–6 weeks I have built similar communication platforms and can ensure fast, stable delivery with incremental testing. Ready to start immediately.

@espsofttech

Hi there, We have delivered real-time messaging and communication apps where users could chat, share media, and use live calling features with stable backend sync and low-latency communication across devices. We can build your Telegram-like application where users can securely sign up, exchange messages in real time, and initiate voice/video calls, with a single synchronized backend supporting iOS, Android, and web from the same data flow. In this type of application, real-time performance, call stability (WebRTC), and session sync are key, so we will design a scalable architecture using a real-time backend (Node.js + WebSockets / Firebase or similar) to ensure messages and calls stay perfectly in sync across all platforms. We will also implement secure authentication with 2FA, optional biometric login for quick access, and a modular system so features like end-to-end encryption can be added later without restructuring the core app. We would request to connect once so we can finalize the tech stack and delivery phases and start with an incremental build approach. Thanks, Rahul A.

@einnovention

Asif and the Einnovention team are the perfect fit for your Telegram-style messenger project. With over 11 years of experience in digital solutions, we have a deep understanding of the requirements you've outlined. Our mobile app development skills cover Flutter and Dart extensively, making us adaptable for both iOS and Android platforms. In addition, our website expertise using PHP is second to none. Security being one of your priorities, I want to assure you that we at Einnovention take this matter very seriously. We’ve successfully implemented two-factor authentication in previous projects and will ensure it's seamlessly integrated into your application. While E2E encryption isn't in the initial scope, our team can deliver it for potential future milestones as required. Finally, our work doesn't end with delivery; we believe in forging long-term partnerships, offering free support for more than two weeks after delivery. With our transparent communication and reasonable milestone deliveries, you'll be able to track progress closely throughout the project. Trust us to build your messenger app undeniably well: efficient across all devices and responsive for maintaining conversations in real-time.

@AITSoft

Hello, I will deliver a polished Telegram-like cross-platform messenger with real-time syncing over a single backend, supporting iOS, Android, and Web. My approach centers on Flutter for speed and a consistent UI across platforms, with WebRTC for voice and video, and a scalable real-time database for instant message sync. Security is baked in from day one with two-factor authentication in the sign-in flow and optional biometric login for quick, secure re-entry. End-to-end encryption is on the roadmap for a future milestone, ensuring we can lock in a strong core experience first. I will provide production-ready apps for iOS, Android, and Web, ready for TestFlight/internal testing and a live staging server. The project will include a clear, well-structured source codebase with build instructions, a minimal admin/CLI tool to manage user accounts and verify 2FA, and a concise deployment guide so your in-house team can redeploy or extend the stack. I’m open to incremental delivery so you can review features as soon as they are ready, with rapid feedback incorporated. What is the preferred maximum payload for update messages per second and any specific back-end preferences (e.g., Firebase, Supabase, Parity with self-hosted WebSocket service)? Best regards,

@doomshellsl

Hi, Doomshell has strong experience building real-time communication platforms (chat + voice/video) and can deliver a Telegram-like app that’s fast, scalable, and secure across iOS, Android, and Web. We’ve worked on systems where synchronization, low-latency messaging, and stable WebRTC calls were critical—so we focus heavily on reliability, performance, and clean architecture from the start. Recommended approach: • Frontend: Flutter (single codebase for iOS, Android, Web with consistent UI) • Backend: Node.js + WebSockets (or LiveKit/WebRTC for calls) + PostgreSQL/Redis • Real-time sync: Event-driven architecture to keep all devices perfectly in sync • Calls: WebRTC (SFU-based for scalability and stability) Core features we’ll deliver: • Real-time messaging with private threads • Voice & video calls (stable, low latency) • 2FA authentication (SMS/Authenticator apps) • Biometric login (Face ID / Touch ID / Android Biometrics) • Responsive web client with full feature parity We also support incremental delivery, so you can test messaging, then calls, then auth—step by step. Quick questions: Do you prefer Firebase-based auth/realtime or a fully custom backend? Any specific UI direction (strict Telegram-like or custom branding)? This is a serious build—happy to help you execute it properly and make it production-ready from day one.

@mrresearcher99

Hi there, I’ve reviewed your Flutter app requirements and would love to help. With 5+ years of experience in cross-platform development, I specialise in clean UI, smooth performance, and robust API integration. I’ll begin with clear planning, share regular progress updates, and ensure the app is fully tested before launch. Let’s connect to discuss your vision — I’m ready to get started! Best, Bhargav Flutter Developer | Android & iOS Expert

@Fazeennazar

Hello Greetings, After reviewing your project description, I am confident and excited to work on this project for you. I have some crucial points and questions to clarify. Please leave a message in the chat to discuss this, and I can share my recent work that is similar to your requirements. I am excited to hear from you soon. Thank you!

@shrec

Hi, I can build your cross-platform real-time messaging app (iOS, Android, Web) using Flutter + Node.js + WebRTC. - Security-first 2FA login + biometric auth JWT secure sessions + rate limiting - Core features Real-time chat (private threads) Voice & video calls (WebRTC + TURN) Push notifications + media sharing - Delivery Single scalable backend + staging/prod setup Admin/CLI tool for user & 2FA management Clean, documented code with milestones Timeline: 6–10 weeks (MVP), 10–16 weeks full V1 Budget: $15K–$50K depending on scope Ready to start immediately with iterative delivery.

@zainalitariq245

Hey, i will build a Telegram-like real-time chat app with messaging, voice calls, video calls, and private chat threads across iOS, Android, and web using a single scalable backend. I will implement Flutter or React Native with WebRTC integration, real-time syncing, secure 2FA login, biometric authentication, and a clean architecture so your apps stay fast, stable, and production-ready with proper staging, testing, and deployment setup. Do you prefer Flutter for single-codebase speed or a native approach for maximum performance - https://www.freelancer.pk/u/zainalitariq245 Best Regards Zain Ali

@eliaa

Hello! I see you want a smooth, Telegram-style app with messaging and voice call features, which means real-time communication and security are crucial. A hidden challenge is ensuring low latency and seamless syncing across platforms without draining battery. Our 4+ years' expertise with Flutter, Laravel, and real-time features fits your needs perfectly. How do you envision managing user authentication and data encryption? Ready to start crafting your cross-platform messenger? Let's discuss the details!

@royalwebraisers

Hi, As per my understanding: you need a Telegram-like cross-platform messenger with real-time sync, chat, voice/video (WebRTC), and secure auth with 2FA/biometrics. Implementation approach: * Define architecture, choose Flutter/React + WebRTC stack * Build messaging, calls, real-time backend (Firebase/Node) * Implement 2FA, biometrics, testing, staged releases Queries: * Preferred backend (Firebase/custom)? * User scale expectations? * Priority features for MVP? I will share my portfolio on your first message. I will be looking forward to hearing from you. Kindest Regards

@teodorgeorge

Hello, I’d be glad to help you create a polished, Telegram-style messenger with real-time sync across iOS, Android, and the web. I’ve built secure, cross-platform communication apps before, and I can keep things simple and clear while ensuring solid performance with WebRTC and smooth authentication. I can deliver clean source code, a neat project structure, and a light admin tool your team can extend easily, keeping the workflow practical and straightforward. Thanks, Teo