Cross-Platform Marketplace App Development

@ambar

Hi, I’ve built cross-platform mobile and transactional platforms closely matching your requirements. **HappyPics** — iOS/Android app with product listings, shopping cart, secure payment processing and integration with the existing platform. **Quick Money** — Flutter application involving interactive maps, custom markers, BLE/beacon technology and real-time data synchronization. I’ve also built transactional booking and WhatsApp workflows for **Mysuru Zoo and Anna Zoological Park**, giving me practical experience with customer transactions, APIs, notifications and operational workflows. For your marketplace, I can handle the complete flow: user profiles and ratings, listings/offers, location-based discovery, payment/wallet API integration, real-time messaging, notifications and backend APIs. I’m comfortable working phase-by-phase from architecture through mobile development, backend integration, testing and store handover. I can start with the core user/listing/API architecture and build the remaining workflows around it.

@KeshavInfotech

Hi, A peer-to-peer marketplace succeeds when the core flow is built correctly from day one: profile trust, offer/bid flow, chat, location browsing, and wallet checkout must stay in sync. The main risk is usually the handoff between listing data, messaging, and payment status, so I’d keep the data model clean and avoid a UI-only approach. My first step would be to map user journeys and edge cases, then define the API structure for auth, listings, bids, chat, notifications, and wallet payment integration. From there, I’d build the cross-platform app with consistent iOS and Android behavior, especially for map filtering, real-time updates, and review/rating logic. Once the end-to-end flow is stable, I’d handle QA, beta testing, and store submission. Key focus areas: User roles and onboarding Listing creation and bid flow Chat and notification behavior Wallet payment API integration Map browse, filter, and location navigation One question: should bids create a chat thread only after acceptance, or immediately when the offer is submitted?

@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 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

@webbookstudio

Hi there, We understand you're looking to develop a peer-to-peer marketplace app for both iOS and Android, featuring user profiles, real-time messaging, secure payment integration, bidding, and map integration. Our team at Webbook Studio has experience with similar projects, such as a music voting mobile app built with React Native and a furniture store mobile shopping app using Flutter. We're confident in our ability to deliver a high-quality, cross-platform app using a single codebase, along with a scalable backend and database. One question: do you have a preferred design style or any existing brand guidelines that should be incorporated into the UI/UX design? Feel free to message us to discuss the details! — Webbook Studio

@shivmirthyusl

Hi, With nearly two decades in the web and mobile app development industry, my team at IT Flex Solutions India has the expertise to bring this cross-platform marketplace app to life. Our experience includes creating complex applications like the one you envision, with secure payment gateways, real-time messaging, and user ratings and reviews. One of the greatest strengths we bring is our extensive knowledge of various technology stacks, such as React Native and Flutter, which allow us to efficiently compile one codebase for both iOS and Android platforms - closely aligning with your desire for scalability. We will also ensure that your app adheres to the latest platform guidelines while keeping user experiences modern and accessible. Moreover, I can provide full-stack development services, including robust backend architecture for scalable APIs, database handling and management, sophisticated user authentication processes ensuring maximum security, integrating smooth payment gateways with sandbox and live modes for seamless digital wallet payments and enabling hassle-free real-time chats too. Thanks, SBM

@OutsourceMan

As the Founder of CnELIndia, my team and I are well-versed in developing cross-platform apps tailored to streamline specific business processes. Our extensive 18-year experience has equipped us with a skill set perfectly aligned with your marketplace concept project. We are highly proficient in your suggested technology stack including React Native, as well as PHP and WordPress which will ensure fast-paced and efficient development for your endeavor. Furthermore, we are comfortable with sharing complete source code, documentation, and providing you with an adequate walkthrough. In essence, CnELIndia offers an unmatched blend of experience, expertise, and client-centric approach to deliver a top-shelf product for you. Let's initiate a conversation to discuss timelines, milestones, and how my team can infuse the project with creativity for maximum impact.

@a4logic

Hello, With my extensive 15+ years of experience and solid background in software development, I am ideally positioned to deliver on all the requirements for your Cross-Platform Marketplace App project. Having worked with React Native, Flutter, and other proven stacks, I can provide you with a finely-tuned app meticulously coded only once but compatible with both iOS and Android. Specifically, my mobile app expertise is an essential cog for developing a clean and efficient platform that meets your specific needs - user profiles with ratings and reviews, real-time in-app messaging, secure payment gateway integration among others. Furthermore, my proficiency in Laravel and REST APIs will ensure that not only are you able to effectively post items or services along with bidding or offer submission functionalities but also manage your backend efficiently. I also have vast experience working with databases like MySQL and PostgreSQL which would be important for the scalability of the APIs as well as storing user authentication information. Lastly, as client satisfaction is absolutely paramount to me, upon completion of the project I will deliver comprehensive documentation encapsulating the entire development process, full source code of the app along with a one-hour hand-off walk-through. Choosing me will guarantee you a reliable partner who will deliver impeccable quality products, meet deadlines in a timely manner and offer post-deli Thanks!

@om26er

Hello, Regarding your project, i would like to discuss the app features in detail to better understand your requirements. i am a mobile applications developer and i have more than 8 years of experience developing mobile applications with backend services. i have developed many Business Solutions from scratch to Stores ready applications. i have completed more than 550 projects. i have live sample apps for you. i am super confident i will provide you best quality software services on time and on budget. Let's chat to proceed.

@gotucat

Hi, I reviewed your cross-platform marketplace app idea, focusing on user profiles, ratings, real-time messaging, secure digital-wallet payments via the special API, bidding/offers, posting screens, and map-based browsing and navigation. I’ll build the iOS and Android apps from a single cross-platform codebase (Flutter), and connect scalable backend development with APIs for authentication, notifications, chat, and the payment gateway. I’ll implement UX / User Experience flows that handle edge cases, plus clean data-input screens and location filters with smooth map integration. You’ll get end-to-end working features, install-clean builds, and thorough QA with a polished handover package and docs. Let’s discuss here now.

@sharmarahulraman

Hi, I can build this peer-to-peer marketplace as a scalable cross-platform app for iOS and Android. I’d recommend Flutter + Node.js/PostgreSQL for a maintainable single codebase and scalable backend. The MVP can cover profiles/ratings, listings, offers/bidding, real-time chat, location-based browsing, notifications, and your digital-wallet API integration. I’ll handle the full process from wireframes and UI/UX through development, QA, beta testing, store submission, and final handover with complete source code and documentation.

@ykarora26

With experience in developing cross-platform marketplace apps, I understand the need to create a seamless user experience with features like ratings, real-time messaging, and secure payment integration. Could you share more about your target user demographics to tailor the design and functionality accordingly? Regards, Yogesh Kumar

@sunainawbst

✅Cross-Platform Marketplace App| React Native | Firebase |Mobile App Development Expert Hi, Hope you are doing good. I have read your requirements carefully and can give you 100% assistance as a React Native Developer for building or enhancing your mobile application. I specialize in creating fast, stable, and scalable apps for both iOS & Android, backed by a secure and efficient Firebase architecture. I’d love the opportunity to discuss your idea further and collaborate on developing a modern, intuitive, and impactful app. (Note: Please consider the current budget as flexible — we can finalize it after discussing the complete scope.) Thanks & Regards, Kajal

@shubhamshrimal7

Hello, Greetings Hope you are doing well. I am a Mobile Application developer with over 5 years of experience. I am confident in my ability and skills to develop high-quality Mobile apps and would like to work on your marketplace app project. I will complete the work as per your requirements. I want to discuss more this project to prepare the final concept. So let’s discuss this in detail over chat then will make plans to start work on it. Waiting for your earliest reply. Thanks. Shubham

@jafarali14

Hi there, This lines up well with pieces I've already shipped — real-time chat between users, wallet/payment-style integrations, and map-based location filtering are all things I've built before, not first-time territory. On the bidding/offer system specifically: I haven't built that exact negotiation flow before, but it's fundamentally state management and CRUD logic (offer submitted → countered → accepted/declined), which is well within what I handle day to day — just flagging that honestly rather than implying prior deals-and-negotiations experience I don't have. Technical approach: - Flutter for a single codebase across iOS and Android - User profiles with ratings/reviews - Real-time in-app messaging for buyer-seller communication - Wallet API integration for payments — once you share the API documentation, I'll confirm sandbox/live handling on both ends - Offer/bid submission and status tracking on listings - Simple posting screens for items/services - Map integration for browse, filter, and location-based navigation I'd follow your six-stage flow as laid out — wireframes first to nail down the offer/negotiation edge cases before development starts, since that's the one genuinely new piece for me and worth getting right on paper first. Best, Chirag

@SBITServices

Hi, I can build this as a cross-platform marketplace app with one codebase, covering the complete flow from wireframes and UI/UX through backend, API integration, testing, and App Store/Google Play deployment. I’ll implement user profiles with ratings/reviews, listings and offers, real-time buyer/seller messaging, map-based browsing, notifications, authentication, and your digital-wallet API for sandbox/live payment flows. I’ll keep the architecture scalable and provide the full source code, documentation, and handover walkthrough. I have 10+ years of development experience and can work with Flutter/React Native, PHP-based backends, REST APIs, databases, and third-party integrations. One point I’d like to confirm early is the wallet API documentation and payment flow, as the implementation will depend on its available endpoints and authentication method. Thank you Regards, Sai

@ranjika08

Hi, I like that you’ve already outlined the full product flow from wireframing to store launch. This kind of marketplace app needs careful planning around messaging, payments, listings, and map-based discovery, and that’s where I can help bring structure as well as development. We can build it in a modern cross-platform stack with a backend that is ready to grow. If you want, we can start by defining the exact MVP boundaries and milestones here on the platform.

@Hammadhassan21

Hey there, What stood out to me is that this isn’t just a listing app. The buyer/seller chat, offers, ratings, location browsing, and wallet API all need to feel like one simple flow. I have worked on mobile apps with user accounts, real time messaging, API integrations, and location features, which lines up well with the marketplace you’re describing for iOS and Android. I’d start by mapping the buyer and seller journeys and wireframes, then build the core flow around the wallet API, offers, chat, notifications, and maps before beta testing. Do you already have the wallet API documentation and sandbox access ready? Looking forward to collaborating with you. Portfolio: https://www.freelancer.pk/u/Hammadhassan21/Top-Mobile-App-Expert Best regards, Hammad Hassan...

@point2solutions

--- Peer-to-Peer Marketplace App Development --- I can help build the marketplace app for both iOS and Android, covering the buyer, seller, payment, messaging, and location-based features. Here's my approach: → Build cross-platform apps with Flutter or React Native and a backend for users, listings, offers, and reviews. → Integrate real-time chat, ratings, map/location features, and the provided digital wallet API. → Add listing creation, bidding/offers, notifications, and secure authentication. → Handle QA, beta testing, store submission, source code, and handover documentation. Flow Registration → Create/Browse Listing → Offer/Bid → Chat → Wallet Payment → Completion & Review Question Do you already have the digital wallet API documentation and sandbox credentials available for integration? Let's connect... Thanks

@ZohaibRoy

⭐⭐⭐⭐⭐ Build a Peer-to-Peer Marketplace App for iOS and Android ❇️ Hi My Friend, I hope you are doing well. I've reviewed your project requirements and noticed you're looking for a peer-to-peer marketplace app. You have no need to look any further; Zohaib is here to help you! My team has completed 50+ similar projects for marketplace apps. I will create a seamless experience with user profiles, messaging, and secure payments, all within your budget. ➡️ Why Me? I can easily build your marketplace app as I have 5 years of experience in mobile app development, focusing on React Native and Flutter. My expertise includes UI/UX design, API integration, and real-time messaging. Not only this, but I also have a strong grip on backend development, ensuring a robust and scalable solution for your project. ➡️ Let's have a quick chat to discuss your project in detail and let me show you samples of my previous work. Looking forward to discussing this with you in chat. ➡️ Skills & Experience: ✅ Mobile App Development ✅ React Native ✅ Flutter ✅ UI/UX Design ✅ API Integration ✅ Real-time Messaging ✅ Payment Gateway Integration ✅ Database Management ✅ QA Testing ✅ User Authentication ✅ Map Integration ✅ Project Management Waiting for your response! Best Regards, Zohaib