Marketplace App Build with Secure Escrow

@jastp

Hi there, Jas this side from Logictrix and I am ready to work on your app with my team and with a promise for long term support in fairly low cost. Please just give me your few minutes for the chat so that we can discuss all the important points about project as well as we can clarify any queries from both side to go ahead further for final agreement. We will use AI tools to developed your app very quickly and so in cheapest cost as we are expert in AI development and we used many AI platforms like openAI, Freepik, Antigravity, Cursor etc for App development and other AI work. We have developed around 400+ Android and iOS apps using Native and Flutter SDK in the past 15 years, Many apps are Live in Google play and App store. We will share our detailed portfolio over the Chat once we connect. Looking forward to your reply... Thanks and Regards Jas

@opencollar

Hi, I understand you need a marketplace app with secure escrow and smooth user experience. Your main goal is to have a reliable system where users can trust each other and transactions are protected. I will develop the app using Flutter so it works great on both Android and iOS with one codebase, saving time and cost. I will set up phone number verification and anti-fraud checks to keep accounts safe. The chat feature will allow real-time communication, and ratings with reviews will build trust over time. Payments will be handled through a trusted gateway making sure buyers’ money is safe until they confirm receipt. I will create a clear admin dashboard to control listings, disputes, and monitor key stats effortlessly. We can keep communication open for updates, quality checks, and quick support after launch to help your business grow. Let’s chat about a plan and craft something impressive together. Regards, Nick.

@irsolutions

With over a decade of experience in full-stack architecture and high-scale systems, I understand your need for a secure marketplace app with an escrow system for Android and iOS. My background in building high-security systems, like the Telegram Mini Apps serving over 1 million users, directly applies to the challenges of ensuring account fraud protection, secure transactions, and GDPR-ready data management in your project. My strategic insight for ensuring scalability and security in this project would be to implement real-time chat functionality for seamless buyer-seller interactions, similar to what I have successfully done in past projects. With a proven track record in developing high-complexity systems, I am confident in delivering a marketplace app that meets your requirements. I encourage you to reach out to discuss the roadmap for your project further. Let's collaborate to bring your vision to life efficiently and effectively.

@diektech

Hi — Elias here from Miami. I understand you're looking to build a secure marketplace app for both Android and iOS. This kind of project typically aims to facilitate seamless transactions between users, which is crucial for user trust and retention. What usually matters most here is ensuring a reliable escrow mechanism. The tricky part is usually managing user roles and permissions effectively, as well as integrating payment gateways securely. Keeping the system scalable for future growth while maintaining performance is also essential. My approach would involve structuring a modular architecture that allows for easy updates and maintenance. I'd prioritize secure API development and ensure that the backend can handle increased loads as your user base grows. I've built similar platforms, focusing on high availability and security, which gives me insight into potential pitfalls. A few questions to better understand the scope: Q1 – What specific user roles do you envision for the platform? Q2 – Are there any particular payment gateways or integrations you plan to use? Q3 – What are your expectations for user scaling in the first year? Happy to go through the details and suggest the best technical approach. Looking forward to hearing from you.

@corpmember29

I HAVE SUCCESSFULLY WORKED ON MULTI-VENDOR MARKETPLACES, REAL-TIME CHAT APPS, AND SECURE ESCROW-BASED TRANSACTION PLATFORMS SIMILAR TO WALLAPOP AND VINTED Your marketplace requires a robust, scalable architecture that supports secure transactions, real-time communication, multi-currency payments, and strong fraud prevention. I can deliver a complete end-to-end solution covering mobile applications, backend infrastructure, payment workflows, and admin management. Key Features: • Phone number registration with SMS OTP verification • Buyer/Seller marketplace with listing management • Real-time chat and offer negotiation • Push notifications for messages, offers, and transaction updates • Escrow payment system with secure fund release workflow • Multi-currency and multi-country support • Ratings, reviews, and reputation management • KYC verification and anti-fraud mechanisms • Dispute management and resolution workflows • GDPR-compliant user and data management • Admin dashboard for listings, payouts, disputes, users, and analytics • Firebase analytics, monitoring, and reporting Recommended Stack: Flutter (iOS & Android), Node.js/NestJS, PostgreSQL, Firebase, Stripe Connect/Escrow-enabled payment flow, WebSocket chat, AWS/GCP deployment. I would be happy to discuss the escrow workflow, supported countries, payment regulations, and project milestones in detail.

@kamran2012

This looks like a great fit, I will deliver the full marketplace app — Flutter for iOS and Android, Node.js backend with the escrow payment flow, real-time chat, SMS-based auth, and the admin dashboard with role-based access. For escrow, I will integrate Stripe Connect with separate connected accounts per seller. Funds hold in the platform account until the buyer confirms receipt, then an automatic transfer fires to the seller. This architecture natively supports multi-currency — Stripe resolves the buyer's locale and processes in their local currency while settling to the seller in theirs, so you avoid building custom FX logic. It also covers the KYC layer, since Stripe handles identity verification for connected accounts above payout thresholds. Looking forward to discussing further. Best regards, Kamran

@sunainawbst

Hello I have read your project requirements, i can help you develop your marketplace app with a strong focus on secure escrow functionality, advanced anti-fraud measures, and efficient admin analytics. With over a decade of experience behind my team at Websultanate Software Technologies Pvt Ltd, we've already delivered 1500+ projects similar to yours in more than 25 countries globally. I’ve successfully launched multiple production apps across Google Play and App Store, delivering secure, optimized, and user-friendly solutions. ⭐Due to NDAs, links aren’t public—but once you open the chat, I’ll share live demos and walkthroughs. I’d be happy to discuss your requirements and execution plan. Bid amount is a placeholder and can be discussed over chat. Thanks & Regards Ranjana

@joomextensions

I have built marketplace apps with escrow flows and recommend Flutter for cross-platform parity with native performance. For payments, I'd suggest Stripe Connect with its built-in escrow hold-and-release, multi-currency support, and KYC for high-value sellers — it's battle-tested for exactly this use case. The stack: Flutter (iOS/Android), Node.js backend, Firebase for real-time chat and push notifications, PostgreSQL for data. I'll implement phone/SMS login, real-time buyer-seller chat, ratings/reviews, in-app escrow, GDPR-compliant data handling, dispute logic, and an admin dashboard with Firebase Analytics. Delivery in 4 milestones. Happy to answer any questions and share relevant portfolio links. Let's discuss. Regards, Harsh Thoriya

@Hammadhassan21

Hi, I understand you’re looking to build a full-featured marketplace app (similar to Wallapop/Vinted) with secure user onboarding, real-time interactions, and a reliable escrow-based payment system across multiple countries. I can design and develop a scalable, high-performance marketplace platform with seamless user experience, strong security, and consistent functionality across mobile apps and backend systems. I will deliver: • Cross-platform mobile apps (Flutter/React Native) with smooth, native-like performance • Phone number authentication with SMS verification and anti-fraud protections • Real-time chat system for buyer-seller communication • Escrow-based payment integration with multi-currency support • Ratings, reviews, and user profile reputation system • Admin dashboard with analytics, dispute management, and payout controls All features will be tested thoroughly to ensure secure transactions, smooth performance, and reliability across devices, regions, and currencies. Here You Can Check My Professional Portfolio: https://www.freelancer.com/u/Hammadhassan21 Let's connect with me chat to discuss more about your project. Best Regards Hammad.

@nikhilgarg96

Hello, I'd love to help build your marketplace app from the ground up. I recommend **Flutter** for Android/iOS and **Laravel** or **Node.js** for the backend, providing a scalable and cost-effective solution with a single codebase. Key features I can deliver: • Phone OTP authentication with fraud prevention • Real-time buyer/seller chat • Ratings & reviews system • Escrow-based payments with multi-currency support • KYC workflows and dispute management • Push notifications • Admin dashboard with analytics and role-based access • API documentation and full source code For payments, I recommend Stripe Connect or Mangopay, depending on your target countries and escrow requirements. A few questions: 1. Which countries and currencies do you want to support in the initial launch? 2. Do you already have UI/UX designs, or should they be included? 3. Will shipping/tracking be part of the MVP or managed outside the platform? I have experience developing marketplace, fintech, and mobile applications and can deliver a secure, scalable solution with post-launch support. Best Regards, Nikhil....

@C0RETECHIES

Hi there, I understand you're building a C2C marketplace where the entire transaction lifecycle happens in-app. The operational flow is centered on a secure escrow workflow: a user registers via phone, lists an item, negotiates with a buyer via chat, and the buyer funds the escrow. Funds are held until the item is confirmed as received, which then triggers the release to the seller and unlocks the review process for both parties. Technical approach: We recommend Flutter for a single codebase for iOS and Android, ensuring feature parity. The backend API would be built on Node.js with a PostgreSQL database. Stripe Connect is ideal for the multi-currency escrow system as it handles fund holding, KYC, and payouts securely. We'd use Twilio for SMS verification and Firebase (FCM) for push notifications. Core modules: - User Authentication: Phone number registration with OTP, profile management, and basic fraud checks. - Marketplace Engine: Item creation and management, search/discovery, and a real-time chat module. - Escrow Payment Flow: Stripe-powered wallet, secure fund holding, automated release triggers, and dispute handling logic. - Reputation System: Post-transaction rating and review submission tied to user profiles. - Admin Dashboard: A web-based panel for listing moderation, user management, transaction monitoring, and dispute resolution. Implementation strategy: We would begin with the core MVP flow as you defined: user registration, listing, chat, and a complete escrow transaction. The admin panel would be developed in parallel to facilitate testing and management. This ensures the core loop is robust before expanding features. Regards, Rohit

@ergauravsethi376

Hi, Do you already have designs (Figma), or should I handle UI/UX as well? I’ve reviewed your requirement for building a complete marketplace app similar to Wallapop/Vinted, and this is exactly the kind of scalable product I’ve worked on before. I have 9+ years of experience building full-stack applications, including marketplace platforms with real-time chat, secure payments, and admin dashboards. I can help you design and develop a reliable, scalable solution from the ground up. My approach is to build a cross-platform app using Flutter or React Native, supported by a scalable backend with secure OTP authentication. It will include real-time chat, escrow payments via Stripe, multi-currency support, an admin dashboard, and essential security features like KYC and fraud protection. I bring strong experience in building marketplace platforms, including payment systems and real-time features like chat. I focus on delivering clean, user-friendly UI along with high performance and scalable architecture. From initial design support to development, deployment, and post-launch maintenance, I handle the entire process end-to-end to ensure a smooth and reliable product. I’m available for a quick call to discuss your goals and suggest the best architecture and timeline. Looking forward to working with you. Best regards, Gaurav

@point2solutions

--- Marketplace App Development --- I’d love to help build your full-featured marketplace platform for Android & iOS with secure escrow payments, real-time chat, multi-currency support, and scalable marketplace architecture. Here’s my approach: → Cross-platform mobile app (Flutter/React Native) with phone-number authentication, SMS verification, fraud prevention, and secure onboarding. → Marketplace features including listings, real-time buyer/seller chat, ratings, reviews, push notifications, and profile reputation systems. → Secure escrow payment workflow with multi-currency support, payment gateway integration, dispute handling, and GDPR/KYC compliance readiness. → Admin dashboard for listings, payouts, disputes, analytics, user moderation, and operational management. → Scalable backend APIs, Firebase analytics integration, clean documented codebase, and post-launch support. Flow Phone Verification → Item Listing → Buyer Chat → Secure Escrow Payment → Delivery Confirmation → Funds Release → Ratings & Reviews Lets connect... Thanks

@DrSyafiq

You're building a two-sided marketplace where the real risk is escrow, trust, and mobile transaction flow, not just listing screens. I would approach this as a production marketplace build: phone-only signup with SMS verification, buyer/seller profiles, real-time chat, offer flow, escrow payment states, ratings, push notifications, and admin controls all tied to one clear transaction lifecycle. For this project, I would focus especially on: - Android and iOS marketplace UX for listing, search, chat, offers, and checkout - Escrow state handling, payment failure cases, fraud/duplicate-number protection, and review integrity - Admin moderation, push notifications, deployment readiness, and clean handover documentation If helpful, I can start by mapping the buyer-to-seller escrow flow and the edge cases before development begins. Best, Dr. Syafiq

@caroldata

Hello, We can develop your complete Android & iOS marketplace platform with phone OTP authentication, real-time chat, escrow payments, ratings & reviews, push notifications, multi-currency support, KYC verification, dispute management, and a full-featured admin dashboard. Our recommended stack is Flutter for mobile apps and Laravel for the backend, ensuring scalability, faster development, and easier maintenance. We will provide complete source code, API documentation, database schema, deployment support, and post-launch bug fixes. We have experience building marketplace, fintech, and real-time applications and would be happy to discuss your requirements in detail. Looking forward to connecting.

@Herculesz

Hi I can build your Android and iOS marketplace with phone-number registration, SMS verification, listings, real-time chat, escrow-style payments, reviews, push notifications, and an admin dashboard. I have experience with Flutter, React Native, Node.js/NestJS, PostgreSQL, Firebase, WebSockets, payment gateways, KYC workflows, multi-currency handling, and role-based admin panels. The main technical problem is keeping payments, disputes, seller verification, chat, reviews, and order status synchronized securely across multiple countries and currencies. My solution is to design a clean API, transaction-safe database flow, compliant hold-and-release payment logic, fraud checks, and reliable event tracking for every marketplace action. I can also implement buyer/seller profiles, listing moderation, dispute management, payout controls, GDPR-ready data handling, analytics, and push notification rules. For the mobile build, I would recommend Flutter or React Native to keep iOS and Android feature parity while reducing duplicated work. The final product will be structured with clear source code, API documentation, database schema, and an admin dashboard ready for marketplace operations. Thanks, Hercules

@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

@zainalitariq245

Hey, I will build a complete Android & iOS marketplace app with phone number authentication, real-time chat, escrow payments, reviews, push notifications, multi-currency support, KYC workflows, anti-fraud measures, and a full admin dashboard from the ground up. I will use Flutter for Android/iOS, Firebase for authentication, notifications and analytics, Node.js backend with PostgreSQL, and Stripe Connect for secure escrow-style payment flows. The platform will be scalable, GDPR-ready, well-documented, and delivered with clean source code plus post-launch bug fixes. Do you already have UI/UX designs and preferred countries for the initial launch so I can finalize the timeline and payment compliance requirements? Portfolio: https://www.freelancer.pk/u/zainalitariq245 I can start immediately and would be happy to discuss the roadmap, milestones, and estimated timeline for a successful launch. Best Regards: Zain Ali

@technologybeach

As an experienced and adaptable full-stack developer, I am confident in my ability to build your marketplace app from the ground up. With proficiency in both native and hybrid mobile app development for Android and iOS, I can ensure a seamless user experience on the platforms of your choice. Additionally, my expertise spans across various backend languages such as Node.js and PHP, ensuring that we can build robust systems based on your preferences. Your project’s core features—real-time chat, ratings/review system, in-app escrow mechanism, multi-currency support—align perfectly with my skill set. Throughout my career, I have integrated numerous third-party solutions like payment gateways (including Stripe and PayPal), SMS platforms (such as Twilio), and social media APIs (Facebook, Instagram) to name a few. This will enable me to create a scalable digital product that will exceed your expectations. In terms of security and compliance, I understand the importance of GDPR compliance and creating robust anti-fraud measures to protect your users' data. I'm also comfortable implementing dispute handling logic and KYC workflows for higher-value sellers. Finally, I believe effective project management is paramount. My agile approach combined with my strong time management skills ensures timely deliveries without compromising on quality. It would be a pleasure to work with you and bring your vision into reality.