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I’m building a native Android application that lets shoppers register quickly with nothing more than their phone number and a one-time password. Once inside, users should be able to browse all items through a clean category filter, view product details, add items to a cart, and place orders in just a few taps. Core flow • On first launch, the app asks for a phone number, sends an OTP, and authenticates the user. • The home screen loads product categories pulled from a backend (REST or GraphQL—whichever you prefer). Inside each category, items appear with thumbnail, price, and short description. • Tapping an item opens a detail page with images, variants, and an “Add to Cart” button. • Checkout accepts mobile wallet payments (Google Pay, Samsung Pay, etc.) and returns a success or failure status that we log server-side. • After purchase, the user can review past orders in a simple “My Orders” screen. I’ll supply product data endpoints and basic UI wireframes; you handle Android Studio setup, phone-number/OTP authentication (Firebase Auth is fine), wallet integration, and final APK/AAB delivery. Source code should be clean, well-commented, and Git-ready so my team can maintain it later. Acceptance criteria 1. Phone-number sign-up/sign-in with OTP, no email or social login. 2. Category filter browses products pulled live from the API. 3. Fully working cart and order placement. 4. Mobile wallet checkout returns verified transaction IDs. 5. Code compiles without errors in Android Studio Flamingo or newer. Let me know your lead time and any SDKs you plan to use so we can lock this in and start testing.
Project ID: 40526995
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177 freelancers are bidding on average $20 USD/hour for this job

—>>Android Shopping App Development<<— Hello, I’ll develop a secure and user-friendly Android shopping application with OTP authentication, product browsing, cart management, mobile wallet payments, and order tracking for a seamless purchasing experience. With Key features User Features * Phone Number OTP Login * Product Categories * Product Detail Pages * Shopping Cart * Mobile Wallet Payments * Order History Admin Features * Product Management * Category Management * Order Management * Payment Tracking * User Management * Analytics Dashboard WITH 3 MONTHS FREE SUPPORT AFTER DEVELOPMENT READY TO START WORK IMMEDIATELY!!!!! Thanks Shweta!!
$20 USD in 40 days
9.8
9.8

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
$15 USD in 40 days
9.7
9.7

With over a decade of experience in full-stack architecture and high-scale systems, I understand your goal of creating an OTP-based Android shopping app that offers seamless user registration and shopping experience. My background in developing high-security systems, coupled with experience in handling over 1 million users, directly applies to the challenges of ensuring smooth authentication, browsing, and payment processes within your project. One strategic insight for your project is to prioritize clean code and thorough documentation to ensure scalability and ease of maintenance. A relevant success from my past projects includes building Telegram Mini Apps serving a massive user base, showcasing my capability to handle complex, high-traffic applications effectively. I encourage you to reach out to discuss how we can collaborate on creating a top-notch Android shopping app that meets all your requirements. Let's chat further about the technical roadmap and how we can bring your vision to life efficiently.
$20 USD in 15 days
9.1
9.1

Hello, I can build your native Android shopping app, enabling quick phone number/OTP registration and a smooth user experience. Users will easily browse products via category filters, view details, add to cart, and complete orders with mobile wallet payments in just a few taps. 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
$17 USD in 40 days
8.4
8.4

With extensive experience in Android app development, I understand the need for a streamlined shopping experience. I have successfully integrated phone number authentication and wallet payments in past projects. Could you provide more details about the UI wireframes to ensure a seamless user experience? Regards, Yogesh Kumar
$20 USD in 33 days
8.4
8.4

Hi, a native Android shopping app with quick OTP-only registration is exactly the kind of mobile commerce build we do — we ship companion mobile apps for our retail platform (EloERP). I'd build the Android app in Android Studio against a PHP/REST (or GraphQL) backend: phone-number signup with OTP verification, product catalogue, cart and checkout, with secure token-based sessions so returning users skip re-entry. Clean architecture, smooth UX, and a backend that's ready to grow with your catalogue. — Muhammad Idrees / Global IT Vision Pvt. Ltd
$22 USD in 30 days
8.1
8.1

Hi sir, I read your project description .I can do your project & able to run successfully. I have 8+ years experience for website & mobile application development also done over 400+ project by a good team members . It will be very much pleasure for me, if you give me the opportunity to do your job for minimum cost. Thanks for your consideration . Thanks with Regards Prosanto
$15 USD in 40 days
8.0
8.0

Hi there, We’ve built several e-commerce apps with features like OTP login, product browsing, cart management, and wallet payments. One of our recent projects, Descripio, focused on converting Amazon product descriptions into optimized A+ content using AI, and we integrated multiple payment gateways for subscriptions. For your app, we can use Firebase for OTP authentication and integrate Google and Apple Pay for seamless payments. We’ll also ensure the app is optimized for fast browsing and responsive design across different Android devices. Let’s schedule a 10-minute call to discuss your project in more detail and see if I’m the right fit. I usually respond within 10 minutes. Best regards, Adil
$25 USD in 40 days
7.6
7.6

Hello, Your requirement for an OTP-Based Android Shopping App aligns perfectly with our expertise at Doomshell Software Pvt. Ltd. We specialize in mobile app development, API integrations, secure authentication systems, and scalable e-commerce solutions. We can help you with: ✔ Native Android app development using Android Studio ✔ Phone number login and OTP authentication using Firebase Auth ✔ REST/GraphQL API integration for products, categories, and orders ✔ Product listing, category filters, and detailed product pages ✔ Shopping cart and seamless checkout functionality ✔ Google Pay and mobile wallet payment integration ✔ Order history and transaction tracking modules ✔ Secure, optimized, and maintainable code with Git-ready delivery Our approach: ✔ Integrate your existing APIs and wireframes into a user-friendly shopping experience ✔ Implement secure authentication, payment processing, and order management ✔ Deliver a tested APK/AAB with clean documentation and deployment support Doomshell Software Pvt. Ltd. builds high-performance mobile applications that provide secure transactions, smooth user experiences, and long-term scalability. A couple of quick questions: Will you be providing payment gateway credentials for wallet integration? Do you anticipate an iOS version in the future so we can plan the architecture accordingly? Regards.
$25 USD in 40 days
7.5
7.5

Hi, this is a straightforward native commerce app on the surface, but the real engineering risk is keeping auth, cart state, payment confirmation, and server-side order records consistent once wallet flows start returning asynchronous success or failure states. I’ve built several production systems where the hard part was not the UI layer, but making the transaction path reliable and maintainable. In your case, that means treating OTP auth, catalog sync, cart mutations, checkout, and order history as separate state boundaries rather than one continuous screen flow. The GraphQL vs REST choice matters less than having clean contracts for products, variants, cart totals, and payment status. The closest work in my background is Squarespace Checkout Streamlining for Meal Service -- 2, where the focus was enforcing correct order composition and preventing invalid checkout states. AI-Driven Marketing Suite Development -- 2 is also relevant on the handoff side because it involved Firebase-backed workflows and a documented client-owned codebase. I usually structure this as auth, catalog, cart, checkout, and orders as isolated modules, with server verification around transaction IDs before marking an order complete. That avoids the common failure mode where the client shows success before the backend has durable purchase state. If useful, I can sketch the order-state model and payment verification flow before implementation. Thanks, Hercules
$50 USD in 40 days
7.3
7.3

Hi there, I understand you need a native Android shopping app with phone-number OTP authentication, live category-based product browsing, product detail pages, cart management, mobile wallet checkout, verified transaction logging, and a My Orders screen. I have experience building Android eCommerce apps using Android Studio, Kotlin/Java, Firebase Auth, REST/GraphQL APIs, structured cart flows, payment SDKs, order history screens, and clean Git-ready codebases for long-term maintenance. I will implement the app from your wireframes with Firebase OTP login, API-driven product/category screens, variant-aware cart logic, Google Pay or supported wallet integration, server-side transaction confirmation, APK/AAB delivery, and concise setup documentation. Q1: Will the backend provide order creation and payment verification endpoints? Q2: Do you prefer Kotlin or Java for the native Android build? Q3: Which mobile wallet/payment provider should be used for launch? Best regards, Stratos
$20 USD in 40 days
7.4
7.4

Hi there, I’ve reviewed your Android app requirements and would love to collaborate on your project. With 5+ years of experience in native Android development, I specialize in building high-performance, user-friendly apps with clean UI, optimized architecture (MVVM/MVI), and seamless API integration. I’ll start with a clear project roadmap, provide regular progress updates, and ensure the app is thoroughly tested for stability and performance before launch. Let’s connect to discuss your app idea in detail — I’m ready to bring your vision to life! Best, Bhargav Android Developer | Kotlin & Java Expert
$15 USD in 40 days
7.1
7.1

Your mobile wallet integration will fail certification if you don't implement proper transaction verification callbacks - Google Pay requires server-side validation before marking orders as complete, otherwise chargebacks will slip through undetected. To ensure compliance, I need clarity on two things: What's your expected daily transaction volume (100 orders vs 10K changes the queue architecture)? And does your backend already handle idempotent order creation, or will I need to build duplicate-prevention logic into the Android client? Here's the architectural approach: - ANDROID STUDIO + KOTLIN: Build modular architecture with MVVM pattern, Retrofit for REST calls, and Room database for offline cart persistence so users don't lose items during network drops. - FIREBASE AUTH + OTP: Implement phone verification with automatic SMS retrieval, rate limiting to prevent abuse, and token refresh logic that keeps sessions alive for 30 days without re-authentication. - GOOGLE PAY API: Integrate Payment Data Cryptography with server-side decryption, implement 3DS authentication for high-value transactions, and handle edge cases like expired cards or insufficient funds with user-friendly error states. - GRAPHQL CLIENT: Use Apollo Android with normalized caching to reduce API calls by 60%, implement pagination for product lists, and add optimistic UI updates so cart changes feel instant. - REST API FALLBACK: Build adapter pattern that switches between GraphQL and REST based on endpoint availability, ensuring the app doesn't break if you migrate backends later. I've built 8 e-commerce Android apps that processed $2M+ in transactions without payment failures. I don't start development until we've mapped out wallet callback flows and fraud prevention rules - let's schedule a 20-minute call to review your payment provider's webhook requirements before I generate the first commit.
$18 USD in 30 days
6.6
6.6

Hello, I hope you are doing well. I understand that you are looking to build an OTP BASED SHOPPING MOBILE APPLICATION, and I would be happy to help. I have extensive experience in designing and developing applications and have successfully delivered many projects. What I offer: -Development using the latest technologies -Daily project updates and clear communication -On-time delivery within the agreed timeline -Complete source code provided after project completion -One year of support for the developed work -10+ years of experience in web and app development -Fully responsive, fast-loading, and SEO-friendly design -A powerful super admin panel to manage the entire system Please feel free to initiate a chat so we can discuss your requirements in detail. Thank you and regards, Dheeraj K.
$15 USD in 40 days
7.2
7.2

As an experienced Full Stack Developer and Mobile App Specialist, I can confidently say that I possess the skills and understanding necessary to bring your Android Shopping App project to life. Throughout my decade-long career, I have consistently delivered successful projects while adhering to client specifications and timelines. From the crucial aspects of Android Studio setup, OTP authentication, and mobile wallet integration, everything you need for a seamless shopping app experience, I've got it ready. Moreover, I specialize in developing clean, well-commented code that's easily maintainable by your team in the future. My understanding of APIs makes me uniquely suited for working with your product data endpoints. Additionally, I'm comfortable using SDKs such as Firebase Auth for phone-number and OTP authentication or any others you prefer. You deserve a developer who can build scalable and secure solutions that fulfill your vision, and with my professional background in Digital Solutions and Mobile Development expertise, I am confident in my ability to provide just that. Let's embark on this project together to create a powerful native Android app that simplifies shopping for your users. Enjoy a fast delivery, clear communication, and a long-term support from me if you choose me for this project!
$15 USD in 40 days
6.4
6.4

Hi There!!! ★★★★ ( Native Android OTP-based shopping app with cart, wallet checkout & REST API integration ) ★★★★ Project understanding: I understand you need a native Android shopping app with OTP-based phone authentication, product browsing via categories, cart system, checkout using mobile wallets, and order history. Backend APIs (REST/GraphQL) will be provided and you need clean, maintainable Android code. ⚜ Android Studio setup & native app development ⚜ Firebase OTP authentication (phone number login) ⚜ REST/GraphQL API integration for products & categories ⚜ Product listing, details page & cart functionality ⚜ Google Pay / wallet payment integration ⚜ Order tracking & “My Orders” screen ⚜ Clean Git-ready, well commented codebase I have 6+ years experiance in Android app development and have built eCommerce and OTP login based apps using Firebase, REST APIs and payment SDKs. I will use Android Studio (Kotlin preferred), Firebase Auth, Retrofit/GraphQL client, and secure payment SDK integration to ensure smooth performance and clean architecture. Let’s connect and discuss API structure and UI flow so we can start building it quickly. Warm Regards, Farhin B.
$15 USD in 40 days
6.8
6.8

Your app’s OTP sign-in and simple product flow can be built quickly using Firebase Auth for phone verification, Retrofit or Apollo for API calls, and Google Pay / Samsung Pay SDKs for checkout. I’ve done a similar Android shopping app where we authenticated users with phone OTP only and integrated Google Pay for smooth payments, so the flow you want is very achievable. A few questions to clarify: - Does your backend support GraphQL or REST better, or should I prepare to handle both? - How many product images or variants can users expect per item (to optimize loading)? I’ll set up the project in Android Studio Flamingo, write clean, commented code, and deliver an APK and AAB ready for your QA. The order history and cart will sync seamlessly with your backend using live data calls. I can start immediately and typically deliver a working build with all your core flows within 2-3 weeks depending on API stability. Let me know your preferred SDKs for wallets and API type so we can get going.
$25 USD in 7 days
6.0
6.0

I have read your job post and I would love to help develop your native Android shopping application. Your requirements are clear, and the user flow is well-defined, making it ideal for a scalable and maintainable implementation. I would build the application in Android Studio using Kotlin, with Firebase Authentication for secure phone-number OTP login and a clean MVVM architecture for long-term maintainability. The app will consume your product APIs, display category-based product listings, support product variants, cart management, order placement, and a complete order history section. For payments, I can integrate Google Pay and other supported wallet solutions through a secure payment gateway, ensuring verified transaction IDs are captured and logged server-side. The codebase will be well-structured, documented, Git-ready, and compatible with Android Studio Flamingo or newer versions. My focus will be on performance, clean UI implementation, secure authentication, reliable API integration, and a smooth checkout experience that is easy for your team to maintain and extend in future releases.
$16 USD in 40 days
6.1
6.1

Hi, I'm Ravi Mishra. Expert Android developer. I will build your retail app using Android Studio, integrating Firebase OTP authentication, dynamic category browsing, and secure Google Pay checkout. You'll get clean, Git-ready code and a production-ready APK on time. Let's start!
$20 USD in 40 days
6.0
6.0

Hi, We have reviewed your requirement for an OTP-based native Android shopping app. We have 9+ years of experience in Android development, building secure e-commerce apps with OTP authentication, REST API integration, cart systems, and payment gateway implementations. We can develop a clean and fast Android application where users can sign up using phone OTP, browse products by category, manage cart, and complete orders smoothly. Key Features Phone number OTP authentication (Firebase Auth) Product listing with category-based filtering (API-driven) Product detail page with images and variants Add to cart and checkout flow Mobile wallet integration (Google Pay / supported gateways) Order history (My Orders section) Clean and responsive Android UI We will ensure smooth API integration, secure authentication, and stable payment flow with proper server-side logging for transactions. We handle full development including Android Studio setup, backend integration support, testing, and final APK/AAB delivery with clean, maintainable code. Let’s connect in chat to finalize scope and start. Thanks InvokeTech
$15 USD in 40 days
5.6
5.6

Kabul, Afghanistan
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