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I need an experienced mobile developer to create a real, reactive trading application that runs on Both iOS and Android. After secure User authentication, the flow should let customers add orders to a Shopping cart–style queue, then complete the purchase through an in-app Payment gateway. Although the focus is trading, I still want the cart paradigm so users can review positions before committing. Real-time prices, order history, notifications, and basic account management will finish the first release. Clean, maintainable code and a native-feeling interface are essential. I am open to Swift/Kotlin, React Native, Flutter, or another modern stack—just explain why your choice best suits low-latency trading. Deliverables • Fully functioning iOS and Android builds uploaded to TestFlight and Google Play Console (internal track) • Complete, well-commented source code with build instructions • API integration hooks documented (backend endpoints provided by me) • Short hand-over session to walk through the build and deployment process When you reply, please outline your proposed tech stack, estimated timeline, and links to any trading or e-commerce apps you have shipped.
Project ID: 40431400
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70 freelancers are bidding on average $206 USD for this job

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 completed more than 525 projects either local or internet based. i am super confident i will provide you best quality software services on time and on budget. Let's chat to proceed.
$200 USD in 10 days
8.9
8.9

Hello!! " iOS & Android Trading App " I have similar kind of expertise and work experience. I am interested in this project. Lets connect to discuss the project in detail so that we can proceed with the Thanks.
$140 USD in 7 days
8.2
8.2

Hi there, I have read your project requirement. You need a real-time trading mobile application for iOS and Android with secure authentication, shopping cart–style order flow, payment gateway integration, real-time pricing, notifications, order history, and account management features. We would recommend Flutter for this project because it provides smooth cross-platform performance, faster development, and a native-like user experience while supporting real-time data handling efficiently. We have experience building fintech, trading, and e-commerce applications with secure API integrations, real-time updates, and scalable mobile architectures. Recommended Stack: • Flutter (iOS & Android) • Node.js / REST API Integration • WebSocket for Real-time Prices • Firebase Push Notifications • Stripe/Razorpay/PayPal Payment Integration A few questions: ============ Which trading APIs or backend services will be integrated? Do you require live charting and analytics in Phase 1? Which payment gateway would you prefer? Will KYC/verification features be included in the MVP? Best Regards, Srashtasoft Team
$240 USD in 7 days
7.1
7.1

Hi, We have strong experience building real-time mobile applications and can develop a responsive trading platform for both iOS and Android with a smooth, native-feeling experience and low-latency performance. Based on your requirements, we would recommend Flutter or React Native for faster cross-platform development while still maintaining excellent responsiveness for real-time trading features. If ultra-low latency and platform-specific optimization become critical, native Swift/Kotlin can also be considered. The application can include secure authentication, live market data updates, shopping cart–style order review flow, payment gateway integration, order history, notifications, and account management features. Our team focuses on clean architecture, maintainable code, and scalable API integration to ensure the platform remains stable as new trading features are added over time. We can also handle deployment to TestFlight and Google Play internal testing tracks, provide fully documented source code, and conduct a complete handover session covering deployment and maintenance workflows. Once we review the backend endpoints and feature priorities, we can provide a realistic development timeline and architecture plan. Regards Interconnect Team
$140 USD in 7 days
6.8
6.8

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
$140 USD in 7 days
6.9
6.9

Hello There!!! ★★★★ ( Real-time iOS & Android trading app with cart-based order flow + payments ) ★★★★ Project understanding: You need a cross-platform trading app for iOS and Android with secure authentication, real-time pricing, and a unique cart-style order system where users review trades before executing. It must include payment gateway integration, notifications, order history, and clean deployment to TestFlight and Play Console. Services: ⚜ Cross-platform app development (Flutter / React Native recommended) ⚜ Secure authentication + user account management ⚜ Real-time trading data integration (low-latency API handling) ⚜ Cart-based order system before execution ⚜ Payment gateway integration for in-app purchases ⚜ Notifications + order history tracking ⚜ Clean native-feel UI/UX optimization I have experience building reactive mobile apps with real-time API integration and payment flows. I usually prefer Flutter for this kind of project because it keeps performance close to native while allowing faster development for both platforms. Will ensure clean architecture, scalable code, and smooth deployment with proper documentation and handover. Warm Regards, Farhin B.
$110 USD in 10 days
6.5
6.5

Hi, We’ve developed multiple trading apps, including a crypto trading platform with real-time price updates, order history, and payment integrations. We also built a web app for brokers to manage users and view trading activity, which directly aligns with your requirement for a secure, scalable backend. For your project, I recommend using Flutter with a Node.js backend. This combination allows us to create a fully optimized web version alongside the mobile app, ensuring a consistent experience across platforms. We can also integrate with third-party APIs for additional features like KYC and payment processing. Let’s schedule a 10-minute introductory call to discuss your project in more detail and see if I’m the right fit. I usually respond within 10 minutes. I’m eager to learn more about your exciting project. Best regards, Adil
$117.33 USD in 7 days
5.6
5.6

Juggling real-time trading with a cart-style review is tough, especially when every second of latency or UX friction can cost your users trust and money. You will get a smooth, native-feeling mobile app for iOS and Android that lets customers queue trades, review them, and check out securely, all while relying on up-to-the-millisecond prices and reliable notifications. I recommend Flutter for this build since it delivers true cross-platform performance and native UI dynamics, with proven low-latency handling that matches the demands of live trading. I will wire up seamless authentication, integrate your backend APIs, and ensure the app is production-ready with a clean, maintainable codebase and full deployment support. Which payment gateway do you plan to use in the app, or would you like input on the best options for Nigeria?
$144 USD in 7 days
5.7
5.7

Hello! As per your project post, you’re looking to build an iOS and Android Trading App that provides a real time, reactive trading experience with secure authentication, cart based order management, and in app payment processing. The goal is to create a simplified yet powerful trading flow where users can review and confirm their orders before execution, along with live pricing, notifications, and account management features. My focus will be on delivering a complete mobile trading platform, featuring: secure user authentication and onboarding, real time market price updates, cart style order queue for reviewing and managing trades before execution, order placement and confirmation flow, payment gateway integration for secure transactions, order history and portfolio tracking, push notifications for price and order updates, and basic account management dashboard. I specialize in building scalable real time mobile applications using Flutter, React Native, Node.js, and WebSocket based architectures with expertise in financial systems, trading workflows, live data streaming, and secure transaction handling. My focus will be on creating a responsive and reliable trading interface with clean architecture, accurate real time updates, and strong security practices. Let’s connect to review your trading flow, market data source, and payment processing structure so we can define the system design and development roadmap for the first release. Best regards, Nikita Gupta
$300 USD in 45 days
5.8
5.8

As a seasoned software developer with a career spanning over 8 years, I believe I possess the skills and expertise necessary to bring your iOS and Android trading app to life. I specialize in creating clean, well-structured code that leads to optimal performance and an exceptional user experience, two key considerations for any trading platform. My proficiency in both native app development with Swift and Kotlin as well as my experience with modern cross-platform technologies like Flutter and React Native places me in a unique position to suggest the best-fit tech stack for your project. What truly sets me apart is my holistic approach to development - from writing source code and performing API integrations with seamless productivity, to ensuring my clients are knowledgeable enough to navigate their way around the final product after delivery. This includes providing clear documentation not only for my own work, but for any backend endpoints you'll be working with too. Lastly, allowing me the honor of collaborating with you on this venture guarantees more than just completion of deliverables on time; it ensures collaboration marked by vibrant communication and dedication towards a long-term, fruitful client relationship. Together, let's craft an intuitive, high-performance trading application that will give your users the full cart-style experience they deserve.
$100 USD in 10 days
5.5
5.5

✋ Hi There!!! ✋ The Goal of the project:- Develop a secure and responsive iOS and Android trading application with real-time pricing, cart-based order flow, payment gateway integration, and scalable mobile architecture. I carefully reviewed your complete project description and understand you need a modern trading app with secure authentication, shopping cart style order management, real-time trading data, notifications, account management, and deployment support for both TestFlight and Google Play Console. With 9+ years experience as a full stack developer, I have completed similar fintech, trading, and eCommerce mobile applications using Flutter and React Native with secure API integration and low-latency performance optimization. 1. Cross-platform mobile development with real-time trading updates and secure payment gateway integration 2. Order queue management, account dashboard, notifications, and API hook documentation 3. UI design, database management, testing, deployment assistance, and full source code delivery I can also provide scalable backend coordination, performance optimization, app store publishing support, and structured handover documentation for future maintenance. Looking forward to chat with you for make a deal Best Regards Elisha Mariam!
$111 USD in 11 days
5.0
5.0

Hi there, I’m excited about the opportunity to develop a real-time trading application for both iOS and Android. With over five years of experience in mobile development, I understand the intricacies of building responsive apps, especially within financial contexts. My approach would utilize Flutter for this project, as it offers fast performance and a native feel across platforms, which is essential for low-latency trading applications. The app will feature secure user authentication, a shopping cart queue for order reviewing, and in-app payments. I’ll ensure real-time price updates and notifications are seamlessly integrated, along with the necessary account management features. To maintain the highest code quality, I will follow best practices and provide thorough documentation. I am available for real-time communication and can provide a demo within 12 hours upon project commencement. I am looking forward to discussing this further. Q1: What specific payment gateway do you prefer for integration? Q2: Are there any particular design preferences or branding guidelines? Q3: What is your target timeline for the first release? Best regards, Cindy Viorina
$30 USD in 11 days
4.4
4.4

I can design and build a high-performance, real-time trading app for both iOS and Android that feels fast, reliable, and secure. I understand the importance of low-latency updates, clean UI for orders and positions, and a stable experience for serious traders. I’ve worked on fintech and trading-style applications that integrate with broker APIs, handle live price streams, and enforce strict security, including encryption and secure authentication flows. My approach would be to define the core trading flows first (login, quotes, order placement, portfolio), select a robust cross-platform framework if appropriate, and integrate with your chosen broker or data provider using reactive streams. Quick question before I suggest a detailed approach: Do you already have a broker/data API selected, or are you looking for guidance on that choice?
$140 USD in 7 days
4.7
4.7

Hi, I have thoroughly reviewed your project requirements for a real-time, reactive trading app on both iOS and Android. With extensive experience in mobile development, particularly in fintech and trading apps, I am confident in delivering a secure, native-feeling app that efficiently supports the cart-style order queue and low-latency price updates essential for trading. For the tech stack, I recommend Flutter due to its capability to produce high-performance, near-native apps on both platforms with a unified codebase, ensuring maintainability and faster updates. Flutter supports smooth animations and real-time updates, ideal for your trading app's responsiveness. I will implement secure user authentication, an intuitive cart system, real-time price streaming, order history, notifications, and account management. Your provided backend endpoints will be fully integrated with clear documentation. I estimate a development timeline of 6-8 weeks to deliver fully functional TestFlight and Google Play Console builds, well-commented code, and a comprehensive handover session. Could you share more details about the expected payment gateway and any preferred third-party services for real-time price feeds? Thanks,
$155 USD in 13 days
4.8
4.8

Hello, I can develop your cross platform trading application with a fast, responsive, and native feeling experience for both iOS and Android. I recommend Flutter or React Native for this project because they allow a single maintainable codebase while still supporting smooth realtime updates, notifications, secure authentication, and scalable UI architecture. The app will include secure login, realtime market pricing, cart style order review flow, payment gateway integration, order history, account management, and push notifications. I will structure the application with clean modular code, efficient state management, and optimized API handling to support low latency trading interactions and future feature expansion. You will receive fully functional builds uploaded to TestFlight and Google Play internal testing, complete source code, documented API integration points, and a walkthrough session covering deployment and maintenance.
$180 USD in 5 days
4.3
4.3

Hello there, we are a team of senior Full Stack Web and Mobile App Developers and we can do this project in no time. Thanks Ashish Kumar.
$140 USD in 7 days
4.1
4.1

As a seasoned mobile developer primarily proficient in Flutter, I believe I'm the ideal fit for your iOS and Android Trading App project. My extensive experience in developing e-commerce apps and API integration aligns perfectly with your requirements. Through integrating Firebase functionalities such as authentication, Firestore, and notifications, I can ensure secure user authentication and efficient shopping cart-like experience for your customers. One of the most crucial aspects of a trading app is low-latency performance - an area where my Flutter expertise shines. The framework allows for the development of reactive, real-time applications that perform seamlessly across devices. As evidenced by my rich portfolio, I've built robust trading-like platforms requiring clean UI and smooth user experience. Moreover, I understand that as an entrepreneur, you're concerned about the timeline and final product quality. With my capabilities in MVP development, bug fixing and performance optimizations in addition to writing clean and maintainable code, I can deliver a fully functioning application within a stipulated timeframe. In fact, let's not just talk about how good I am at the job — let me show it to you through unparalleled dedication to your project from start to finish. Looking forward to the opportunity to wow you!
$110 USD in 7 days
4.0
4.0

Hi, I checked your requirement for an iOS & Android Trading App. I understand you need a real-time trading app with secure authentication, cart-style order flow, live pricing, order history, notifications, and payment integration, delivered for both iOS and Android with clean and maintainable architecture. I have 8+ years of experience in mobile app development and have built high-performance Flutter and React Native apps with real-time data handling and financial/payment integrations. My recommendation is **Flutter** because it provides: * Near-native performance for iOS & Android * Single codebase for faster development * Strong support for real-time UI updates (ideal for trading flows) * Easy integration with REST/WebSocket APIs My approach will be: * Secure login/auth system * Cart-based order management flow * Real-time price updates via API/WebSockets * Payment gateway integration * Order history + push notifications * Clean architecture with scalable codebase I can also share relevant app examples I’ve worked on. Let’s connect and discuss the API structure.
$140 USD in 7 days
5.0
5.0

Hi, As per my understanding, you need a responsive trading application for iOS and Android with real-time pricing, cart-style order flow, secure payments, notifications, and smooth low-latency performance using a scalable mobile architecture. Implementation approach: * Develop Flutter/React Native app with native-like trading experience * Integrate real-time APIs, payment gateway, and order management flow * Build secure authentication, notifications, and account modules A few queries: * Will websocket APIs be provided for live market updates? * Which payment gateway do you prefer for in-app transactions? * Do you require biometric login in the first release? I will share my portfolio on your first message. I am confident about the delivery after our first discussion. I will be looking forward to hearing from you. Kindest Regards
$450 USD in 10 days
4.2
4.2

Your app requires a balance between trading responsiveness, transaction reliability, and a smooth user experience, especially with real-time pricing and cart-based order confirmation flows. I’m a professional Flutter developer experienced in production-level mobile applications involving secure authentication, payment gateway integration, real-time API handling, notifications, and scalable app architecture. Flutter would be a strong fit here because it allows a single high-performance codebase for both iOS and Android while still delivering a polished native-feeling interface and faster iteration for trading-related UI updates. I can build the complete flow including secure login, live market data integration, cart-style order review, payment processing, order history, notifications, and account management with clean maintainable code and proper API abstraction for your backend endpoints. I also pay close attention to performance optimization, smooth state management, and production deployment standards so the builds remain stable during TestFlight and Play Console testing. Clear documentation and handover support will also be included for long-term maintainability.
$140 USD in 7 days
4.4
4.4

Ikorodu, Nigeria
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