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I’m ready to turn my existing REST API into a polished React Native mobile application. The API is fully documented and the screen designs are complete; what I need now is a clean, TypeScript-based codebase that follows good component architecture and stays as close to pure React Native as possible. Core requirements • Authentication: wire the app to my API using Basic authentication and persist credentials securely. • Navigation & UI: a tabbed interface that presents a master list (pulled from the API) and corresponding detail views, matching the provided Figma files pixel-for-pixel. • Offline experience: cache the entire app’s data locally so users can browse previously fetched content without a connection, with automatic background sync on reconnection. • Code quality: strongly-typed components, sensible folder structure, linting and formatting already configured. Keep native modules to a minimum—only introduce them when a pure JavaScript approach can’t achieve the needed performance or platform integration. • Maintainability: shared UI elements should live in a small design-system folder; business logic tucked behind hooks or services for easy testing. Deliverables 1. Complete React Native (TypeScript) project in a private Git repository. 2. README with setup, run, and build instructions plus notes on any native modules chosen. 3. Short Loom walk-through showing authentication, tab navigation, offline behaviour, and syncing. I’ll provide: • Postman collection + OpenAPI spec. • High-fidelity designs for all screens. • Test accounts and sample data. Once the repository is merged and the walkthrough is approved, the project is considered complete.
Project ID: 40704028
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246 freelancers are bidding on average $461 USD for this job

Hello, I can build your documented REST API into a polished, TypeScript-based React Native application while keeping the implementation close to pure React Native. I’ll structure the project around reusable components, typed hooks/services, and a focused design-system folder so future changes remain straightforward. Your Basic authentication flow will securely persist credentials, while the tabbed master/detail experience will be implemented against the supplied Figma designs with careful pixel-level attention. For offline use, I’ll cache fetched data locally, support browsing without connectivity, and trigger reliable background synchronization when the connection returns. The API integration will use clear HTML5-aware data presentation patterns where applicable, with maintainable REST API service boundaries and minimal native dependencies. I’ll also deliver the private repository, configured linting and formatting, a practical README covering setup/run/build instructions and native-module decisions, plus a Loom walkthrough demonstrating authentication, navigation, offline access, and sync behavior. Should offline synchronization use last-write-wins, or do you need conflict handling for locally changed data? I’m ready to review the OpenAPI specification, Postman collection, and Figma screens and begin with the data/cache architecture. Best regards, Muhammad Awais
$750 USD in 12 days
9.4
9.4

Hi, I’d start by setting up a clean React Native app shell with a solid state model, because auth, tab navigation, and offline handling need to be right from the beginning. Since you already have API docs and Figma, I can keep the architecture lean while still supporting secure login, cached browsing, and reliable sync. My approach would be to first implement the Basic auth flow through a typed service layer, then build the master/detail navigation with reusable components. After that, I’d add local caching for the full dataset, restore the last successful state on launch, and enable background refresh when the device reconnects. Key skills and focus: App structure and TypeScript setup Secure credential storage Tab navigation and master/detail flow Local cache and reconnect sync Shared UI components and hooks I can also advise on sync behavior: whether the app should prioritize the newest server data or let local changes win in conflicts. Timeline: I can review the requirements quickly and begin implementation right away, with an initial working structure ready early in the project. If youd like, I can discuss this further in Freelancer chat or a video call.
$287 USD in 12 days
9.5
9.5

Hello, Could you share the APIs details document so i can check and start working in it. Let's chat to proceed.
$250 USD in 8 days
8.8
8.8

Hi, This is Elias from Miami. I’ve checked the project description, and I understand you already have the API, Postman/OpenAPI documentation, Figma designs, and test data, so the focus is building a clean, maintainable React Native app around them rather than figuring out the backend. I have strong React Native and TypeScript experience and can build this with a shared component/design-system structure, hooks/services for API and business logic, secure credential storage, and minimal native dependencies. For offline support, I’d use a local data layer to cache the API data and handle background synchronization and conflict/error states when connectivity returns. Q1: Does the API use standard HTTP Basic Auth on every request, or does authentication return a session/token that should be persisted after the initial login? Q2: When offline changes are possible, should the app support queued writes/sync, or is the offline requirement strictly read-only access to previously fetched API data? Q3: For “entire app data,” should the initial sync download the complete dataset, or should the app progressively cache data as users browse while prioritizing the latest records? I’ll deliver the private Git repository, typed and organized codebase, lint/format configuration, README, and Loom walkthrough covering authentication, navigation, offline mode, and synchronization. Regards.
$500 USD in 7 days
8.7
8.7

Hello We are Ominfowave Software Services Pvt. Ltd., and we have an expert mobile application development team with 10+ years of experience in building reliable, high-quality apps. ? Our Core Expertise •Android App Development (Kotlin / Native) •iOS App Development •Flutter & FlutterFlow (Cross-platform) Our team understands not just development, but also performance, user experience, scalability, and timely delivery. ? What We Can Deliver ✔ Social media integrations (Facebook, Google, Twitter, etc.) ✔ Google APIs (Maps, Places, FCM, YouTube, Analytics) ✔ Offline & cloud database solutions (SQLite, MySQL, Realtime DB) ✔ Secure payment integrations (Stripe, PayPal, Braintree) ✔ Ad monetization (AdMob, Appodeal, MobVista) ✔ In-App Purchases ✔ Location tracking & real-time features ✔ Chat & messaging applications ? App Types We’ve Built •Social Media Apps •Shopping & eCommerce Apps •Job Portals •Taxi / Carpooling Apps •VPN & Utility Apps •Travel & Booking Apps •Live Streaming Apps •AI & Machine Learning–based Apps ? Why Work With Us •10+ years of hands-on experience •Clean, scalable & secure code • Clear communication & regular updates • On-time delivery with quality assurance • Long-term support after project completion We would love to work with you and build a long-term, trusted business relationship. Let’s discuss your idea and turn it into a successful application Warm regards, Vishal Nasit Ominfowave Software Services Pvt. Ltd.
$550 USD in 25 days
8.3
8.3

Hello, I am Dr. Rajesh Rolen, PhD in Computer Science & Engineering, with experience of over 20+ years in API Integration, Mobile App Development, React Native, Figma, JavaScript, jQuery / Prototype, REST API, HTML5 As a preferred freelancer in the top 1%, I have done 400+ projects here on freelancer.com, I have 4.9 ratings out of 5 on average, which showcases my quality of work and timely delivery. Key Highlights: - Free Hosting Support on the Cloud or any desired platform. - Free 3 months of post-delivery support to ensure that our client doesn’t face any challenges after the launch of the project. - Free Dedicated tester on projects to ensure quality delivery, so clients don’t need to act as a tester. - 10+ Years experience UI/UX team to ensure intuitive UI. Portfolio: https://www.freelancer.com/u/Microlent Please open the chat and send me a message, so we can have a more detailed discussion about the project to give you the project timeline and cost. Thank you for considering my services. I look forward to engaging in a productive conversation and understanding how I can be of assistance in bringing your project to life. Regards Rajesh Rolen
$500 USD in 10 days
8.5
8.5

Hi there, We understand you're looking to develop a React Native offline-cached app that integrates with your existing REST API, utilizing TypeScript for a clean codebase and good component architecture. Our team at Webbook Studio has experience with similar projects, such as a music voting mobile app built with React Native, React.js, and Node.js, and a furniture store mobile shopping app using Flutter and Node.js. We'll deliver a complete React Native project with a strong focus on code quality, maintainability, and offline experience, ensuring a seamless user interface as per your provided Figma designs. Can you tell us more about your expectations for the authentication process and how you envision the automatic background sync on reconnection? Feel free to message us to discuss the details! — Webbook Studio
$440 USD in 10 days
8.0
8.0

The key challenge here is not just turning an API into screens, but making the app feel reliable offline while keeping the codebase clean enough to maintain later. I’d structure this with typed service layers, reusable UI components from your Figma, and an offline-first data flow so previously fetched content remains usable and sync resumes cleanly when connectivity returns. I’ve worked on React Native builds where the hard part was balancing polished UI with practical architecture—auth handling, local persistence, sync logic, and keeping native dependencies minimal. For a brief like this, staying close to pure React Native only works if the state, caching, and navigation layers are planned properly from the start. I can also include a tidy README and handoff notes so the repo is easy to pick up after delivery. - How many distinct screens are in the Figma set, including auth and detail states? - Should offline mode support read-only browsing of cached data, or do users also create/update records while offline? - Do you already have a preferred library for secure credential storage and local cache, or should I choose the lightest stable option?
$750 USD in 7 days
7.8
7.8

With over a decade of experience in web and mobile app development, I am well-equipped to deliver the streamlined, high-quality React Native application you envision. I have extensive experience with application design, including replicating pixel-perfect designs like those you've provided, which will ensure consistency between your API and the app interfaces. Your project requirements align perfectly with my skillset. One of the core strengths that I bring to the table is my command over React-Native and JavaScript technologies. This includes excelling in TypeScript, as required for your project. My meticulousness with code organization,-strongly-typed components, coupled with efficient folder structure will contribute to a maintainable codebase. I also assure good performance and platform integration by minimizing native modules unless absolutely necessary. Another key requirement you've mentioned is an offline experience with cached data that syncs automatically in the background when there's a connection. My relevant skills in Firebase/FCM and deep knowledge of incorporating APIs such as Push Notifications and Google Maps gives me the ability to implement this effectively. Let's connect to discuss further details about your project; you can trust me to handle your React-native app transformation from API to an easy-to-use reliable mobile application.
$500 USD in 7 days
8.0
8.0

Hi, Drawing from 19+ years in the industry, my team and I at IT Flex Solutions India are more than equipped to deliver your React Native Offline-Cached app that has top-notch codebase and adheres closely to the pure React Native principle. We have successfully completed 483+ projects, ensuring clean code structure, efficient linting, formatting, while maximizing native modules only where pure JavaScript approach won't suffice for performance or platform integration. In addition to our in-depth knowledge of API Integration and keen eye for converting Figma designs into pixel-perfect interfaces, we're quite conversant with TypeScript, an important need in your project. We understand your request for a maintainable code and we excel in modularizing our work for easy testing and future scalability. Our proficiency also branches out into providing robust offline experience via local caching, seamlessly synchronized fetching process during reconnection and strongly-typed components. Thanks, SBM
$500 USD in 7 days
8.0
8.0

Hi, I reviewed the project and understand you need a polished React Native TypeScript app built from your documented REST API, with secure authentication, pixel-perfect Figma screens, and reliable offline caching. I can structure the codebase with strongly typed components, tab navigation, master-list and detail views, a small design-system folder, and hooks or services for maintainable business logic. Mobile App Development will include Basic authentication, secure credential persistence, local data caching, background synchronization, and Git delivery; jQuery / Prototype can remain absent where pure React Native is the better fit. I’ll provide clean implementation, clear README instructions, responsive communication, and a concise Loom walkthrough covering authentication, navigation, offline behavior, and syncing. Let’s discuss here now.
$250 USD in 30 days
7.6
7.6

I can take this from scope to a tested handoff without bloating the first milestone. You're building a eact Native Offline-Cached App where the hardest part is making external integrations and the API layer stay reliable as scope grows. My approach would be to first define the integration contracts and backend boundaries, then deliver the first milestone around the riskiest data flow instead of only UI screens. Quick question: Which external integrations are absolutely required for MVP, and which can be staged after launch? Also, do you already have the API and screen designs, or should the first milestone define the end-to-end mobile flow? Best, Dr. Syafiq
$500 USD in 21 days
7.5
7.5

⭐⭐⭐⭐⭐ Build a React Native App from Your REST API with TypeScript ❇️ Hi My Friend, I hope you're doing well. I just reviewed your project details and see you are looking for a React Native mobile application from your existing REST API. You have no need to look any further as Zohaib is here to help you! My team has successfully completed 50+ similar projects for React Native applications. I will create a clean, TypeScript-based codebase that closely follows your designs and meets all core requirements. ➡️ Why Me? I can easily build your React Native app with strong authentication, navigation, and offline capabilities. I have 5 years of experience in mobile app development, focusing on React Native, TypeScript, and REST APIs. My expertise includes UI design, state management, and optimizing app performance. Besides, I have a strong grip on code quality and maintainability, ensuring your app is both efficient and easy to manage. ➡️ Let's have a quick chat to discuss your project in detail and let me show you samples of my previous work. I look forward to discussing this with you in our chat. ➡️ Skills & Experience: ✅ React Native ✅ TypeScript ✅ REST API Integration ✅ Authentication ✅ UI Design ✅ Offline Data Caching ✅ Component Architecture ✅ State Management ✅ Code Quality Assurance ✅ Git Version Control ✅ Testing and Debugging ✅ Performance Optimization Waiting for your response! Best Regards, Zohaib
$350 USD in 2 days
7.7
7.7

Howdy, With the API and Figma designs already prepared, the real challenge is turning them into a React Native app that stays reliable when connectivity isn’t perfect. I can build a clean TypeScript architecture where authentication, caching, offline browsing, and background sync work together without making the codebase unnecessarily complex. I’ll structure the UI around reusable components, keep API and data logic behind typed services and hooks, and use secure credential storage with a clear reconnect and sync strategy. I’ll also establish linting, formatting, and project conventions from the beginning so the repository remains clean and easy to extend. I can show you similar React Native work in chat so you can review the implementation quality. The final handoff will include the private repository, setup/build documentation, native module notes, and the requested Loom walkthrough covering the complete flow. Portfolio: https://www.freelancer.com/u/Hammadhassan21 Best regards, Hammad Hassan
$350 USD in 10 days
7.5
7.5

Hello!, I am a US-based full stack/mobile developer with around 10 years of experience building React Native apps, TypeScript codebases, REST API integrations, secure authentication, offline caching, background sync, and pixel-matched mobile UI. I read your project description carefully and understand that the API and Figma designs are already ready. What you need now is a clean React Native app that connects to your REST API, securely stores Basic Auth credentials, matches the designs closely, caches data locally, and keeps the app usable even when offline. For this build, I’d keep the architecture simple and maintainable: React Native + TypeScript, React Navigation for tabs/detail views, secure credential storage, a service layer for API calls, hooks for business logic, local caching with SQLite/MMKV/AsyncStorage depending on data size, and lint/format setup from the start. Relevant work includes: - React Native app with offline-first data browsing - Mobile dashboard connected to REST/OpenAPI backend - Secure login flow with encrypted local storage - Pixel-matched Figma-to-mobile implementation Could you please clarify the following questions to help me better understand the project? 1. Roughly how large is the full dataset that must be cached offline? 2. Should offline data be read-only, or can users make changes while offline? 3. Do you already have a preferred private Git provider? Regards, James Zappi
$500 USD in 7 days
7.1
7.1

I see you're looking to create a React Native app that integrates with your REST API while making sure a smooth offline experience. The focus on caching data locally and implementing those automatic background syncs is key for user experience, especially when connectivity is inconsistent. I can set up Basic authentication securely and make sure the app's UI aligns with your Figma designs perfectly. And I can have the complete project ready for you to test first—only award the project once you're satisfied with the results, so there's no risk on your end, which is pretty great. My bid for this project is 329 USD, and I'm ready to go ahead and start immediately to deliver a clean, maintainable codebase that meets your specifications. Rajavel - React Native & TypeScript Developer.
$329 USD in 10 days
7.2
7.2

Hi, Thank you for posting such a clear and well-written task! As a fan of clean React Native apps, my main skills are TypeScript, typed components, and staying close to pure RN, so I am very much at home turning a documented REST API and finished Figma into a maintainable mobile codebase. Plus, my recent work has been shipping tabbed master–detail apps with secure sign-in, offline browsing of cached data, and a quiet sync when the network returns. That lines up closely with your brief. I will wire Basic authentication to your API, keep credentials in the device keychain (the one native piece that is truly needed), and match the Figma screens pixel-for-pixel. Shared UI will live in a small design-system folder; API and cache logic will sit behind hooks and services. I have a few questions: - Should the first delivery target iOS, Android, or both? - Are you happy with a keychain module for stored credentials, and JavaScript elsewhere? You will get a private Git repo, linting and formatting already set, a README for setup, run, and build, and a short Loom covering auth, tabs, offline use, and sync. I can share similar React Native work I have shipped. Looking forward to working with you. Best regards, Diah
$500 USD in 7 days
7.6
7.6

Greetings, I’m excited about the opportunity to help you turn your REST API into a polished React Native mobile app. It looks like you have a solid plan in place with documented APIs and complete designs. My approach would focus on creating a clean and maintainable TypeScript codebase that adheres closely to React Native standards while ensuring the app’s offline functionality and smooth user experience. I’ll implement secure authentication, a tabbed navigation system, and a robust offline caching mechanism that allows users seamless access to previously fetched content. Maintaining high code quality is also a priority, so I'll ensure everything is well-structured and easy to test. With my experience in React Native and TypeScript, I'm confident I can deliver a solution that meets your expectations. Best regards, Saba Ehsan
$400 USD in 3 days
6.2
6.2

I can build the React Native app in TypeScript from your existing API and Figma designs, with secure Basic authentication, tab navigation, master/detail flows, full offline caching, and automatic sync when connectivity returns. I’ll keep the codebase modular with reusable UI components, hooks/services, strong typing, linting, and minimal native dependencies, then deliver the complete Git repository, README, and Loom walkthrough. I can start immediately and work milestone-by-milestone within your budget.
$250 USD in 7 days
6.4
6.4

Hi, I'm Denis, a full-stack developer specializing in React Native apps with offline-first architectures and API integration. I understand you need a maintainable codebase handling authentication, data sync, and seamless offline functionality. With your documented API and completed designs, we can focus on clean TypeScript components and a robust offline layer without guessing requirements. I'll start with project structure, authentication, and secure credential storage using AsyncStorage. Then build tabbed navigation and master-detail views matching your Figma specs. The core challenge is offline caching and sync: I'll implement SQLite, intercept API calls to serve cached content offline, and queue mutations for sync when connectivity returns—keeping UX smooth. I'll keep native modules minimal, using pure JavaScript solutions wherever possible. The design system stays lean with reusable components, and business logic lives in hooks and services for easy testing. One important consideration: data consistency during sync. If users modify cached content offline while the API changes that same data, we need a clear conflict resolution strategy. I'll discuss this upfront and implement something practical for your use case. Deliverables include a clean repository with setup instructions, a README covering native module decisions, and a Loom walkthrough demonstrating the full flow. I can start immediately. Let's connect and discuss details. Thanks, Denis.
$250 USD in 3 days
6.3
6.3

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