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Flutter Android WhatsApp API Connector I’m building a single–platform Flutter application that will run on Android and act as a lightweight client for the Meta WhatsApp Cloud API. The goal is simple: once the user authenticates with a basic email + password flow, the app must pull the most recent conversations from the WhatsApp Business endpoint, show them in a clean chat UI, and let the user reply or start a new thread. Core scope • Flutter (stable channel) codebase targeting Android only • Email-based login (no social or phone auth) stored securely with Firebase Auth or a similarly straightforward backend you prefer • Full integration with the official Meta WhatsApp API: – fetch and list inbound messages in near-real-time – send outbound text messages to any number permitted by the Business account • Basic state handling (provider, bloc, or Riverpod—your call) so the message list stays in sync without manual refresh • Minimal but polished material-style UI: chat list, chat detail, compose bar, and a settings screen for API keys / logout Acceptance criteria 1. I can log in with email + password, land on the chat list, and see latest conversations. 2. New inbound WhatsApp messages appear automatically (webhooks or polling). 3. I can tap a thread, type, and successfully deliver a message via the API. 4. All API keys and secrets are loaded from .env or secure storage, never hard-coded. 5. Project builds and runs on a fresh Android Studio install with a single flutter run command. 6. Source code delivered through a private Git repository with clear README instructions. If you’ve already wired Flutter to external REST or GraphQL services and are comfortable handling WhatsApp Business webhooks, you’ll find this straightforward. Let me know the libraries you’d lean on and any prior integrations you’ve shipped.
ID do Projeto: 40152244
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As a top-rated Android and Flutter developer with over 10 years of experience, I am equipped with the necessary skills to successfully complete this project. Having worked on various mobile development projects including API integration; I am well-versed with handling webhooks and handling external REST or GraphQL services, exactly what this project entails. My team’s expertise is not limited to these technologies, as indicated in our profile we have a wide breadth of skills needed for this mobile app. With you having just as much importance as us, I prioritize frequent communication during projects. This would involve regular updates and insights on progress made to help maintain transparency and ensure that we are heading in the desired direction. Additionally, given my high level of experience across different platforms coupled with an organized approach to coding & documentation, rest assured that your project will be built efficiently allowing for easy future maintenance and scalability. Considering the importance of maintaining security API keys and secrets used for the project will be adequately stored within .env or secure storage rather than being hard-coded
$175 USD em 7 dias
4,4
4,4
44 freelancers estão ofertando em média $157 USD for esse trabalho

As an experienced full-stack software engineer with a passion for creating and scaling technology products, I believe I'm the perfect fit for your WhatsApp API connector project. With over 12 years of experience in web and mobile app development, including proficiency in Flutter and Java, I have honed my skills in creating robust user interfaces and connecting them with external services. Throughout my career, I've built many applications and have even integrated Flutter with external REST and GraphQL services. Leaning on my prior experience in integrating WhatsApp Business webhooks, I will ensure that your app successfully pulls conversations in near-real-time and allows users to reply or start new threads seamlessly. Moreover, to uphold the highest security standards, I'm well-versed in using storage systems like .env file or secure storage for storing sensitive information. Additionally, I'll ensure that the project builds flawlessly on a fresh Android Studio install, simplifying the process for you. With me on your team, you can be assured of getting top-notch quality, timely delivery and utmost professionalism through each stage of the project's lifecycle. Let's connect to discuss your specific requirements and get started!
$50 USD em 5 dias
5,3
5,3

Hey, I’ve reviewed your project and understand you’re looking for a Flutter Android app that acts as a lightweight client for the Meta WhatsApp Cloud API, allowing users to log in with email, view recent conversations, and send or receive messages in near real time. The focus will be on clean, material style UI, smooth state management, and secure handling of API keys. I can develop a fully functional Flutter app using Firebase Auth for email login and integrate it with the official WhatsApp Business API to fetch inbound messages, send outbound texts, and keep the chat list synced via webhooks or polling. State management will be handled with Provider, Bloc, or Riverpod to ensure responsive updates. The app will include a polished chat interface, compose bar, settings for API keys, and secure storage for secrets. You’ll receive a complete, build-ready project hosted in a private Git repository with a clear README, allowing you to run the app on a fresh Android Studio install. Let’s connect so I can share relevant Flutter + external API integrations and outline the most effective structure for your WhatsApp client. Best regards, Muhammad Adil Portfolio: https://www.freelancer.com/u/webmasters486
$120 USD em 6 dias
4,7
4,7

Hello Experienced Flutter developer ready to build your Android messaging UI and WhatsApp API connector. I’ll craft a responsive, native-feeling Flutter interface and integrate WhatsApp Business API or approved connectors for messaging, media, and auth. Delivery within 2–3 weeks with clean code, tests, and documentation. Let’s discuss details. Giáp Văn Hưng
$175 USD em 7 dias
4,8
4,8

Hi there, I can build this Flutter Android client cleanly and end-to-end, with secure email/password auth, a polished chat UI, and full integration with the official WhatsApp Cloud API. I’ve wired Flutter apps to external REST services before and am comfortable handling message sync via webhooks or smart polling, with state management to keep conversations live and reliable. I’ll keep secrets out of the codebase, document everything clearly, and deliver a repo that runs with a simple flutter run. Looking forward for your positive response in the chatbox. Best Regards, Hassan H
$170 USD em 7 dias
4,4
4,4

Hello, I’m Rahul Singh from Team Velora, and we have been running successfully for the last 3 years with a strong Flutter development team. We clearly understand your requirement for an Android-only Flutter app integrated with the official Meta WhatsApp Cloud API for real-time chat and messaging. Our team can easily deliver a clean, secure, and fully functional solution—let’s connect in the chat box to discuss the project further.
$150 USD em 3 dias
4,0
4,0

I am the ideal choice for your Messaging App UI project, and here’s why. With my 10+ years of experience in Full Stack Web and Mobile App Development, including proficiency in Flutter, your unique requirements align perfectly with my skill set. Having completed numerous projects involving Flutter, I am confident in my ability to seamlessly connect your application to the Meta WhatsApp Cloud API without compromising structural integrity or stability. In addition to programming proficiency, I bring a strategic mindset and practical approach to every project I undertake. I see your project not just as a UI development task but as a valuable asset for your business functionality. My previous experience applying external REST and GraphQL services translates directly into this endeavor—giving you the added benefit of a cross-functional perspective that will ensure successful integration of WhatsApp Business webhooks.
$60 USD em 5 dias
3,9
3,9

I can build your Flutter Android app as a lightweight WhatsApp Business client. I’ve read your requirements carefully and understand the need for secure login, real-time message sync, and a polished chat UI. 1) I’ll create a Flutter stable codebase targeting Android, implement email/password authentication via Firebase Auth (or another secure backend), and integrate the official Meta WhatsApp Cloud API to fetch and send messages in near-real-time. State management will be handled with Riverpod/Provider to keep the chat list in sync automatically. 2) Once approved, I’ll deliver a minimal material-style UI, secure API key storage via .env or secure storage, and a clean Git repo with a README showing setup and usage. I’ve previously integrated Flutter apps with REST/GraphQL APIs and handled webhook-based updates, ensuring smooth real-time experience. Looking forward to your response. Thanks for your time.
$140 USD em 7 dias
3,4
3,4

I've built several Flutter apps with real-time messaging architectures and have hands-on experience integrating the Meta WhatsApp Cloud API, so I understand exactly what you need—a clean, responsive Android client that authenticates users, syncs conversations, and handles bidirectional messaging without manual refreshes. My approach: Firebase Auth for secure email/password flow, Riverpod for reactive state management, and a webhook-based listener (with polling fallback) to ensure inbound messages appear instantly. I'll structure the codebase with a clean repository pattern separating your API layer from the UI, store all sensitive keys in flutter_secure_storage, and deliver a polished Material 3 interface. I'm available to start immediately and would love to discuss your project further.
$30 USD em 1 dia
3,4
3,4

Hello, I’m Karthik, a Flutter & backend integration specialist with 10+ years of experience building production-grade mobile apps that connect securely to external APIs, including messaging and real-time systems. I understand your requirement clearly: a Flutter (Android-only) client for the Meta WhatsApp Cloud API with clean authentication, near-real-time message sync, and a simple, polished chat UI. How I’ll deliver this • Flutter (stable) Android app with clean, maintainable architecture • Secure email + password authentication (Firebase Auth or equivalent) • Full integration with Meta WhatsApp Cloud API – Fetch and display recent conversations – Near-real-time inbound updates (webhooks or efficient polling) – Send outbound text messages to approved numbers • Reliable state management (Provider / Riverpod / Bloc) • Minimal, polished Material UI: chat list, chat view, compose bar, settings • Secrets handled via .env / secure storage, never hard-coded Deliverables • Working Flutter Android app • Clean, documented source code in a private Git repo • README with setup and run instructions • App builds and runs with a single flutter run I’m comfortable wiring Flutter apps to REST APIs, handling webhooks, and ensuring secure key management. Happy to share similar integrations and confirm libraries and timelines. Regards, Karthik Flutter & API Integration Engineer 10+ Years Experience
$321 USD em 7 dias
3,2
3,2

Hello! I am excited about the opportunity to work on your Flutter Android WhatsApp API Connector project. I plan to create a single-platform Flutter application for Android that will serve as a lightweight client for the Meta WhatsApp Cloud API. The app will enable users to authenticate using email and password, view recent conversations from the WhatsApp Business endpoint, engage in chats, and start new conversations seamlessly. Key features include Flutter codebase for Android, secure email-based login with Firebase Auth, integration with the Meta WhatsApp API for real-time messaging, state management for message synchronization, and a sleek material-style UI. I am confident in delivering a high-quality solution that meets your requirements. Regards, anilptk
$150 USD em 5 dias
2,1
2,1

Your project requires a Flutter Android client for the Meta WhatsApp Cloud API, handling real-time messaging, secure login, and a clean chat UI. I have extensive experience building Flutter apps integrated with REST/GraphQL APIs, managing state with Provider, Bloc, or Riverpod, and delivering polished material-style interfaces. I focus on secure authentication (Firebase Auth or similar), API key management via secure storage, and reliable synchronization of chat threads without manual refresh. Every project I deliver includes clear documentation and a Git repository setup, ensuring smooth handoff and easy setup. Could you clarify if you prefer webhook-based real-time updates or polling for incoming messages? I’m ready to start immediately and deliver a fully functional, production-ready Android app that integrates seamlessly with the WhatsApp Business API.
$140 USD em 7 dias
2,2
2,2

Hi, I’m Dhaval, a Flutter developer with 7+ years of experience. We can build your Android-only Flutter app connecting securely to the Meta WhatsApp Cloud API, with email login, near-real-time chat sync, and polished Material UI. We will implement Firebase Auth for secure email, password login, use Riverpod, Bloc for state management, and integrate WhatsApp Business API to fetch, send messages. API keys will be stored securely, and the project will build on a fresh Android Studio setup. Delivery includes source code, README, and full setup instructions. Thanks, Dhaval V.
$140 USD em 7 dias
1,5
1,5

I will design a clean, intuitive messaging app UI integrated with the WhatsApp Business API for seamless customer communication. The UI will support chat lists, conversation view, message status, templates, media sharing, and quick replies, all optimized for speed and clarity. I’ll focus on a WhatsApp-like familiar experience while aligning with your brand identity. The design will be developer-ready with proper components, states, and responsive layouts. Integration considerations such as API limits, automation triggers, and message flows will be kept in mind to ensure smooth implementation and scalability. Let’s connect
$140 USD em 7 dias
0,4
0,4

Dear [Client Name], I propose to develop a Flutter Android WhatsApp API Connector with a seamless chat experience using Meta WhatsApp Cloud. Leveraging Firebase Auth for secure email-based login, the app will fetch, display, and send WhatsApp messages via the official API. I guarantee a polished material-style UI, real-time message updates, and secure key handling. The codebase will integrate provider, bloc, or Riverpod for state management. Let's build a reliable, efficient solution together. Looking forward to collaborating. Best regards, Reghard
$200 USD em 14 dias
0,0
0,0

I understand your need for a seamless Flutter Android client integrating the Meta WhatsApp Cloud API with secure email authentication. I will implement Firebase Auth for straightforward, secure login and use Riverpod for efficient state management ensuring real-time message sync via webhooks. The UI will be minimal yet polished, following Material Design standards. API keys will be securely managed through .env files. Let’s begin by aligning on preferred libraries and initial setup for a smooth, step-by-step development. Best, Brad
$165 USD em 3 dias
0,0
0,0

I can build your Flutter Android WhatsApp client fully integrated with the Meta WhatsApp Cloud API. Users will log in via email/password, view recent conversations in real-time, and send or reply to messages with automatic sync using Provider/Bloc/Riverpod. All API keys will be securely stored, webhooks/polling implemented, and the project delivered with a clean codebase, full README, and Git repo ready to run with a single flutter run command.
$90 USD em 3 dias
0,0
0,0

⭐⭐⭐ FLUTTER ANDROID + WHATSAPP CLOUD API INTEGRATION ⭐⭐⭐ Hello! I specialize in building clean, production-ready Flutter apps that integrate securely with external APIs, including real-time messaging and business platforms. I can deliver an Android-only Flutter app that connects reliably to the official Meta WhatsApp Cloud API. The app will support secure email/password authentication (Firebase Auth or equivalent), fetch and display recent conversations, and allow users to reply or start new threads through a polished, Material-style chat UI. I’ll handle inbound message sync via webhooks or efficient polling, implement solid state management (Provider / Riverpod / Bloc as appropriate), and ensure all secrets are managed via .env and secure storage—never hard-coded. The codebase will be clean, well-structured, and easy to run on a fresh Android Studio setup. What you’ll get: • Flutter Android app with login, chat list, chat detail, compose, settings • Full WhatsApp Cloud API integration (send/receive) • Secure key handling + clear README • Private Git repo delivery I’m comfortable with REST integrations, webhook handling, and Firebase-backed Flutter apps. Ready to start immediately and happy to discuss libraries and prior similar work.
$250 USD em 7 dias
0,0
0,0

I can build a clean Android-only Flutter MVP that integrates with the official Meta WhatsApp Cloud API and covers the full core flow you described. I’m experienced with REST API integrations, authentication flows, secure secret handling, and keeping client state in sync with external services. My focus is on clear architecture and predictable behavior rather than overengineering. For this project, I’d deliver: email + password login (Firebase Auth or a simple backend) fetching and displaying recent WhatsApp conversations sending outbound text messages via the API basic state management so messages stay in sync without manual refresh all API keys and secrets loaded from env / secure storage I prefer to deliver the core functionality first and use the remaining time for refinement and testing, which is why I’ve set a 14-day delivery window. The result will be a runnable Flutter project (Android), delivered via a private Git repository with a clear README so it builds and runs on a fresh setup with a single command.
$200 USD em 14 dias
0,0
0,0

Hi — I can build a single-platform Flutter (Android) app that acts as a lightweight client for the Meta WhatsApp Cloud API, matching your scope and acceptance criteria closely. I’m comfortable integrating Flutter with external REST APIs and handling real-time updates via webhooks or polling. What I’ll deliver App & Architecture Flutter (stable channel), Android-only Clean, maintainable project structure State management using Provider / Riverpod / Bloc (happy to align with your preference) Authentication Email + password login using Firebase Auth (or an equivalent lightweight backend) Secure credential handling WhatsApp Cloud API Integration Fetch and display recent conversations Near-real-time inbound messages (webhooks preferred, polling fallback if needed) Send outbound text messages to permitted numbers Proper error handling and API limits awareness UI Minimal, polished Material-style UI Chat list, chat detail view, compose bar Settings screen for API keys and logout App builds and runs with a single flutter run Source code delivered via a private Git repository Clear README with setup and run instructions Experience & approach Strong experience with Flutter + external REST APIs Familiar with webhook-driven and real-time message syncing Focus on reliability, clean state updates, and predictable behavior Looking forward to getting this built.
$185 USD em 7 dias
0,0
0,0

Hi there, I read your project and immediately understood the challenge. Connecting a Flutter app to the WhatsApp Cloud API isn't just about sending messages—it’s about managing real-time synchronization, strict Meta policies, and secure session handling. I specialize in Flutter & AI Solutions, and I can build this Android client to be stable, fast, and compliant. What I will deliver for you: Robust Real-Time Chat: I use Firebase to handle Webhooks, ensuring messages appear instantly without delay (just like the native WhatsApp app). Meta Compliance: I handle the API session management correctly so your number remains safe and compliant with Meta's strict business policies. Smart AI Integration (Bonus): I will integrate a lightweight AI (like Llama/OpenAI) that analyzes incoming messages and drafts suggested replies for you. This turns your app into a productivity tool, not just a messenger. Clean & Secure Code: Your API keys will be encrypted, and the architecture will be easy to maintain. Why $145 & 7 Days? This covers a fully custom build, proper testing to prevent bans, and the AI integration. I don't use generic scripts; I build for long-term stability. I am ready to start immediately. Let’s build a solution that actually works for your business. Best regards, Jeeva Full stack Developer & AI Solutions Specialist
$115 USD em 7 dias
0,0
0,0

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