The latest articles on DEV Community by Pietro (@pit9023). https://dev.to/pit9023 https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F4194641%2F11de5d19-df55-4f61-b7ac-8d7c1de623e1.png https://dev.to/pit9023 en Pietro Mon, 19 Oct 2026 17:53:13 +0000 https://dev.to/pit9023/building-aura-how-i-built-a-real-time-voice-connection-app-with-flutter-firebase-and-agora-5e0i https://dev.to/pit9023/building-aura-how-i-built-a-real-time-voice-connection-app-with-flutter-firebase-and-agora-5e0i <p>Finding someone to talk to when you need a listening ear shouldn't be complicated. That’s why I created <strong>Aura</strong> — a supportive platform designed to connect people with volunteer listeners in real time through secure, low-latency VoIP voice calls.</p> <p>We just launched our landing page, and I'd love to get feedback from the developer community!</p> <p>💡 What is Aura?</p> <p>Aura is a mobile application built to foster genuine human connection. Whether someone is going through a tough moment or simply wants an empathetic conversation, Aura matches them with available volunteer listeners based on proximity, language, and real-time availability.</p> <p>🛠️ The Tech Stack</p> <p>To deliver a smooth, responsive cross-platform experience, I chose a modern stack:</p> <ul> <li>Frontend: Flutter &amp; Dart (Single codebase for iOS and Android)</li> <li>Real-time Audio: Agora RTC SDK (High-reliability audio channels)</li> <li>Backend &amp; Database: Firebase (Firestore, Cloud Functions)</li> <li>Auth: Firebase Authentication (Phone / SMS OTP)</li> </ul> <p>🏗️ Architecture Highlights</p> <ol> <li><p>Secure Token Generation for Calls<br> To keep voice channels secure, Firebase Cloud Functions dynamically generate short-lived Agora channel tokens on demand, ensuring API keys are never exposed on the client side.</p></li> <li><p>Live Listener Pool State<br> Using Firestore real-time streams, the app maintains an active pool of available volunteers and filters connections efficiently using location parameters.</p></li> </ol> <p>💬 I'd Love Your Feedback!</p> <p>We are currently gauging interest and gathering early feedback before the full public rollout. </p> <ol> <li>Visit the landing page:<a href="https://aura.aura-app-official-project.workers.dev/" rel="noopener noreferrer">https://aura.aura-app-official-project.workers.dev/</a> </li> <li>Let me know what you think of the concept in the comments below!</li> <li>If you've built real-time audio apps with Flutter and Agora, how did you handle background call states?</li> </ol> <p>If you find this project interesting, feel free to drop a reaction! 💖</p> flutter firebase showdev webdev