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Looking for an experienced full-stack mobile app developer/team to build an audio-only paid consultation app similar to Connecto. Tech stack preference: - Flutter frontend - Node.js + TypeScript backend - WebRTC P2P audio calling - [login to view URL] - PostgreSQL - Redis - Coturn Core MVP features: - OTP authentication - User & expert profiles - Expert discovery/listing - Wallet & recharge system - Paid audio calls (per-minute billing) - Ratings & reviews - Push notifications - Admin panel Important requirements: - Scalable architecture - Low-cost infrastructure optimization - Clean production-grade code - Strong realtime/WebRTC experience - Experience with payment gateway integration Please share: - Relevant portfolio - Realtime/WebRTC experience - Estimated timeline - Team size - Approximate budget
Project ID: 40443824
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77 freelancers are bidding on average ₹111,315 INR for this job

Hello, I'm excited about your vision for an audio-only paid consultation app, drawing inspiration from Connecto. My comprehensive full-stack experience, particularly with Flutter, Node.js, WebRTC, and scalable architectures, is ideal for bringing your MVP to life. I’m Waqas from Eclairios, a professional software engineer with over 7 years of experience in app and web development. I have successfully completed 128 projects, earning a 5.0 rating from satisfied clients. I specialize in mobile apps (Android, iOS, Flutter), website development, custom APIs, and backend solutions. My goal is to deliver high-quality, scalable solutions that meet your business needs. Why hire me? ★ 100+ Projects Completed with 5-star rating. ★ 3 months of free post-launch support ★ Expertise in advanced technologies and systems Let’s connect and discuss how I can help you with your project. Best regards, Waqas
₹108,219 INR in 7 days
8.3
8.3

As an experienced app developer, I've successfully delivered over 100 projects with a 100% client satisfaction rate. And I'm here to tell you, building your audio-only consultation app using Flutter, Node.js and other tech-stack outlined is right up my alley. I have the hands-on knowledge of both frontend and backend development, allowing me to create a seamless system. In addition to my expertise in Flutter, JavaScript, Node.js- I also have experience with WebRTC and Socket.IO. Real with necessary push notifications and user-authentication functionalities signals me that scalability is of utmost importance here. And in my decade-long career, I've learnt the necessity of scalable yet cost-effective infrastructure optimization. Moreover, I also understand the need for clean production-grade code and low latency audio calling which requires a deep understanding of P2P Audio Calling and WebRTC, two skills that shine in my skillset. In terms of timeline and budget for your project,I would require more details for giving you an accurate estimation which I'll make sure to provide once we connect. All in all, I'm ready to spearhead this project with an aim to deliver a high-performance app solution that fits your needs perfectly. Looking forward for us to build something amazing together!
₹112,500 INR in 7 days
4.5
4.5

As an experienced full-stack developer, my team and I would be the perfect fit for your audio-only consultancy app project. We specialize in building scalable and robust applications using the latest technologies, including Flutter, Node.js, TypeScript, PostgreSQL, and Redis, which aligns well with your required tech stack. Our strong suit is our remarkable expertise in real-time communication and WebRTC, enabling seamless audio calling - a crucial feature for your paid consultation app. Moreover, our experience with payment gateway integration ensures a secure and dependable transaction process for your users. When it comes to scalability and cost optimization, we've got you covered. With a deep understanding of AWS, Azure, and Google Cloud, we can develop a high-performance architecture while considering minimal costs. Lastly, apart from delivering clean code and efficient solutions that match your needs precisely, we boast a comprehensive skill set that includes AI development and Salesforce integration. With our help, you can amplify your app's potential with intelligent automation or add more value to your business process with AI-powered features. Choose us to transform your concept into an outstandingly potent product!
₹112,500 INR in 7 days
4.0
4.0

**DO NOT PAY ME UNTIL I COMPLETE! :)** Hello my valuable client :) My profile is new over here but I have 7 years of experience in this field. I have completely understood about your project. Also I will provide you free maintenance on your project for 1 year after project completion. I can definitely complete this in your timeframe. Give me one chance to prove myself. Hit the chat button to get started. If you will not like my work then you dont need to pay me any money so dont worry and have faith in me :) I am eagerly waiting for your message.
₹75,000 INR in 7 days
3.8
3.8

Greetings I can surely help you for Build Audio-Only Consultancy App I am in the IT industry since more than a decade and serve so many clients in building and rebuilding websites, software, and applications I have strong hands-on different cms like webflow, Wordpress, shopify, squarespace, wix and on different programming languages like PHP, Laravel, React, Node.js, HTML, CSS, And I did the migration from HTML to click funnels. I have made so many websites (E-commerce, WordPress, Classified admin, WooCommerce, etc.), bots, softwares, and Mobile applications (Android, IOS, and Huawei Play store) in my entire career. I have strong hands on both the front end and back end. Currently, I am part of the team who are dealing with miscellaneous tasks in dubizzle and Mzad Qatar including design and layouts and they both have more than 1 million users. I believe that you are looking for a web designer and for sure you will get your end desire result with plagiarism-free work and with better quality as I am assuring you this. Package deals can also be done for long-term collaboration as per the client's requirement. Kindly do come on chat so that we can discuss project details further more.
₹75,000 INR in 2 days
3.2
3.2

I can build the audio consultation app with Flutter and Node.js and make sure the realtime calling side stays stable because WebRTC projects usually become painful later when the architecture is rushed early on. From your MVP the important part is handling per minute billing wallet deduction call state syncing and reconnect logic properly so users do not end up arguing about call duration and balances every other day. I would structure this with Flutter on the frontend Node.js with TypeScript on the backend WebRTC with Coturn for audio routing Redis for realtime events and PostgreSQL for transactional data so the system stays scalable without burning infrastructure costs too fast. The app can also be designed in a way where adding video calls subscriptions AI summaries or expert availability automation later does not require rebuilding the whole backend from scratch. I have 8 years experience in Flutter Node.js and WebRTC and I can start immediately and help map out a realistic MVP timeline before development begins. I am waiting for your response.
₹112,500 INR in 7 days
3.1
3.1

Hi there, I'm Hemant, an experienced full-stack developer passionate about building robust, real-time applications. Your vision for an audio-only consultancy app immediately resonated with my background in creating scalable platforms, especially with Flutter, Node.js, and WebRTC. I’m particularly excited about the real-time audio aspect and optimizing for low-cost, high-performance infrastructure. My recent projects have involved similar WebRTC P2P audio calling and secure payment integrations, ensuring both a smooth user experience and a solid backend. Let's connect to discuss how I can bring this app to life efficiently and scalably, turning your idea into a production-grade reality. Best, Hemant
₹120,000 INR in 30 days
2.8
2.8

I have reviewed your requirements for the audio-only consultancy app. The critical challenge is syncing the WebRTC audio stream with the server-side wallet. Preventing revenue leakage requires a precise Redis-backed event loop to trigger per-minute deductions without interrupting the P2P stream. I am a Full-Stack Systems Architect in Delhi NCR, specializing in real-time WebRTC protocols and scalable Node.js backends. Partnership Note: I submitted a highly competitive proposal to open this conversation. My primary goal is earning a 5-star review. We can align on the exact commercial scope once we discuss your expected user count in the chat. Recent real-time platforms I engineered: Bluff Arena: Zero-refresh environment using complex WebSocket logic for real-time state and secure wallet transactions. Fireball Logistics: Enterprise OS built for real-time tracking and optimized state management. What I will deliver: Low-Latency Audio: Optimized WebRTC signaling and tuned Coturn server. Secure Wallet: Per-minute billing logic with automated call termination. Production Code: Scalable PostgreSQL architecture with clean TypeScript. Quick question: Are you planning to use a third-party wallet provider or should I build a custom ledger system within your PostgreSQL database? Looking forward to your message.
₹80,000 INR in 7 days
0.8
0.8

Hi, I can help with building an audio-only paid consultation app with OTP login, expert discovery, wallet top-ups, per‑minute billing, and WebRTC P2P calls. IO and Coturn. To reduce risk, we’ll ship a focused MVP slice (OTP, profiles, discovery, call setup) first, validate costs, then expand to payments, ratings/reviews, push, and admin. Which payment gateway should I integrate for wallet recharges? Do you want admin to manage expert approvals, pricing, and call history in the first release? If you reply with these, I’ll send a clear MVP timeline and team plan.
₹75,000 INR in 3 days
1.0
1.0

As an up-and-coming freelancer, I understand the value of providing high-quality work and building a solid reputation. Although I may be new to Freelancer, I have valuable skills in web designing and mobile app development that align perfectly with your project requirements. My passion lies in creating clean, high-performing interfaces that not only look great but also drive user engagement and boost conversion Aside from technical expertise, what sets me apart is my commitment to open and frequent communication. We'll navigate each milestone together ensuring all your unique needs are met. In summary, by choosing me you will get well-designed apps built with scalability and security in mind, proficiency in real-time capabilities as well as deep expertise of payment gateway integration. Lastly, I understand the importance of keeping expenses in check while maintaining a robust infrastructure. Hence ,I will offer you a cost-effective solution without compromising on quality and performance. With me on board , you will receive utmost value for your time and finances. Let's chat and discuss about your project , so we can determine an accurate timeline and budget to bring your vision to life!
₹112,500 INR in 8 days
0.0
0.0

I am ready to take your project, I understood your requirements and I think I can send you a quick prototype for your reference so that you can decide of selecting me to continue your work. Initiate a chat to discuss more about me, my experiences and your work.
₹112,500 INR in 7 days
0.0
0.0

I’m confident I’m the right fit for this role. Your project to develop a scalable, feature-rich audio-only paid consultation app with real-time WebRTC capabilities perfectly aligns with my expertise. With extensive experience in UX/UI design, website and app redesign, and developing modern, user-friendly interfaces, I have successfully improved usability and integrated AI-driven features. My background includes app development, logo creation, and deep familiarity with scalable backend architectures using Node.js and real-time communication technologies. I understand the importance of a clean user-friendly UI for high-end customers. I’d love to chat about your project and offer a free consultation to discuss how we can create a seamless, efficient app tailored to your needs. Regards, Nabeel Ismail
₹82,500 INR in 30 days
0.0
0.0

We recently assisted a client with a similar setup, ensuring their application ran seamlessly on the new environment without disrupting existing workflows. I can help you build a scalable, audio-only consultation app using Flutter and Node.js that integrates WebRTC for smooth, per-minute paid calls. My focus is on delivering clean, production-grade code and optimizing infrastructure costs to keep your app reliable and efficient. This is exactly the kind of project where a structured, detail focused approach makes all the difference, and that’s what I bring. Your emphasis on scalable architecture and seamless realtime communication aligns well with my experience developing user friendly, integrated platforms with robust payment systems. Regards Sebastian
₹75,000 INR in 30 days
0.0
0.0

As an eminent IT solution company, GSINFOTECHH OPC Pvt. Ltd. is your trusted tech partner for your audio-only paid consultation app. Our extensive expertise in mobile app development using Flutter frontend and Node.js backend, particularly with real-time and WebRTC technologies, offers you a strong foundation to realize your project. Furthermore, our remarkable experience with payment gateway integration is a valuable addition ensuring a seamless per-minute billing system for paid audio calls. Your requirement for a scalable architecture and low-cost infrastructure optimization aligns perfectly with our core competencies, allowing us to deliver robust yet cost-effective solutions best suited for your budget. Beyond our technical skills, what sets us apart is our dedication to customer satisfaction and on-time delivery. We pledge to utilize this project to its utmost potential by ensuring clean production-grade code and building powerful functionalities like user & expert profiles, ratings & reviews, and an admin panel that make it easy for you to manage and optimize the app's potential. Let's collaborate to build something truly remarkable!
₹75,000 INR in 7 days
0.0
0.0

This feels like a project where clarity and execution really matter. Building a seamless, audio-only consultation app requires a balance between reliable real-time communication and a user-friendly design that supports smooth expert discovery and payment processes. Ensuring scalable, clean code will be key to handling per-minute billing and push notifications without compromising performance or cost efficiency. I specialize in full-stack development with experience in Node.js and Flutter, and I’m comfortable working with real-time technologies like WebRTC and Socket.IO. While I am new to freelancer, I have tons of experience and have done other projects off site. I would love to chat more about your project! Regards, Tiaan
₹112,500 INR in 30 days
0.0
0.0

Jaipur, India
Member since May 14, 2026
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