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I’m building a lightweight Android mobile app focused solely on text-based chat. What I need is a clean, well-structured module that lets users send and reply to messages in real time. No file sharing or voice/video calls—just fast, reliable text delivery with read receipts. Core needs: • Android-native code (Kotlin or Java) with clear, commented structure • Simple login placeholder, then a single chat screen that lists threads and opens individual conversations • Real-time text send/receive using Firebase, [login to view URL], or another stable solution you recommend • Local message persistence so recent chats remain visible offline • Basic UI/UX that follows Material guidelines and can be re-skinned later Hand-off items: • Full source code in a Git repo • Brief README explaining setup, key classes, and how to switch back-end credentials • APK for quick testing If you’ve built chat features before and can keep the footprint lean, let’s talk timelines and any questions you have.
Project ID: 40525274
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75 freelancers are bidding on average $19 USD/hour for this job

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
9.6
9.6

Dear , We carefully studied the description of your project and we can confirm that we understand your needs and are also interested in your project. Our team has the necessary resources to start your project as soon as possible and complete it in a very short time. We are 25 years in this business and our technical specialists have strong experience in Java, Mobile App Development, Software Architecture, Git, Kotlin, Mobile Development, Android App Development and other technologies relevant to your project. Please, review our profile https://www.freelancer.com/u/tangramua where you can find detailed information about our company, our portfolio, and the client's recent reviews. Please contact us via Freelancer Chat to discuss your project in details. Best regards, Sales department Tangram Canada Inc.
$25 USD in 5 days
7.9
7.9

Hi, Android App Development Expert | 8+ Years of Experience I understand you need a lightweight Android chat module with real-time messaging, read receipts, offline message persistence, and a clean, maintainable architecture. I will: Develop the app in Kotlin (or Java if preferred) with well-structured, documented code. Build a login placeholder, chat thread list, and individual conversation screens following Material Design. Integrate Firebase or another reliable real-time messaging solution with read receipts. Implement local message caching for offline chat history. Deliver the complete Git repository, README, and APK for testing. Ready to get started!
$15 USD in 2 days
5.7
5.7

Hi, I have extensive experience in Mobile App Development, especially with Android-native code using Kotlin and Firebase integration. I will set up the chat module to ensure fast, reliable real-time messaging with local message persistence for offline access. How do you envision the user experience flow in your chat app, especially regarding UI/UX flexibility? Thanks, Juan Aponte
$25 USD in 2 days
5.4
5.4

I specialize in Android development and understand you need a lightweight chat app with a quick reply feature. Your goal to keep the app simple and fast aligns well with best practices for mobile messaging. I have experience building efficient chat features, ensuring smooth user interactions and minimal resource use. My past work includes custom reply functionalities in messaging apps. I would approach this by focusing on responsiveness and seamless integration within your app. Happy to review your current setup and get this back to a stable state.
$20 USD in 7 days
4.3
4.3

Hello, Offline persistence conflicting with real-time sync is where most chat builds break - messages arrive in the background, local cache gets out of order, and threads show the wrong last message on reopen. I would build this in Kotlin with Firebase for real-time sync, Room for local persistence, read receipts, and clean Material UI easy to reskin later. Git repo, README, and test APK on handover. Are you keeping this as a standalone module or extending it into a full app later? Happy to work on this. Ready to start now.
$15 USD in 40 days
4.1
4.1

The text-only, lightweight scope actually keeps this straightforward. I would build it in Kotlin with a RecyclerView and a clean reply flow, keeping the APK light with no unnecessary dependencies. Can start today and have a working version ready in 2 days. The bid reflects what is in the description. Final numbers come after we walk through the full scope together. Want to jump on a quick call?
$25 USD in 3 days
1.0
1.0

Implementing real-time messaging without the overhead of file sharing or voice calls demands a focused approach. Leveraging Firebase for seamless text delivery ensures scalability and reliability, complemented by local message persistence to maintain offline access. A clean Kotlin architecture will facilitate easy modifications and enhance maintainability. With a simple login placeholder and a Material Design-compliant single chat screen, users will experience intuitive navigation and efficient communication. Expect the initial deliverable within 14 days, complete with a comprehensive README and APK for testing. Do you have a specific timeline for the first milestone?
$16 USD in 40 days
0.0
0.0

Hello , I just saw your project regarding Android Chat Reply Feature Development. I've been building scalable web apps and custom integrations for a while, and this fits right into my wheelhouse. I'm a full-stack developer with hands-on experience in AI (custom LLMs, RAG, workflow automation), SaaS architectures (React, Node.js), and Web3 integrations. Instead of just delivering basic scripts, I focus on building secure, production-ready solutions that actually scale. I've launched multiple real-world products and know how to avoid the common technical pitfalls in these areas. Let's have a quick chat so we can go over your exact needs. I can share some of my recent work so you can see the code quality firsthand. Thanks, Emre
$30 USD in 36 days
0.0
0.0

Hello, How are you? I am very happy to bid on this interesting project. Also I am glad to inform you that I have relevant strong experience in Android App Development, Java, Mobile Development and have worked on many similar projects before. I can start immediately and you'll be satisfied with my result. I'm always waiting for your reply. Regards!
$25 USD in 36 days
0.0
0.0

Hi how are you doing, A lean, reliable text chat feature for Android essentially comes down to choosing the right real-time backend and architecting for clear scaling. I've focused on similar production LLM apps where latency and cost were key. The deliverables outlined are well within my familiar territory, especially building out clean, commented codebases for seamless handoff. My experience with integrating real-time features and managing local data persistence means a robust solution will be in place. A short chat can nail priorities and timeline - appreciate your time.
$15 USD in 40 days
0.0
0.0

Is the main issue building a lightweight chat module, or are you mainly trying to achieve fast, reliable text delivery with read receipts? With extensive experience in developing chat functionalities, I know how to create a seamless user experience while keeping the code clean and maintainable. The focus will be on ensuring real-time text delivery, local message persistence, and a straightforward UI that adheres to Material guidelines. This means users will enjoy swift interactions and access to recent chats even offline. I recently developed a similar chat feature using Firebase, resulting in a 30% increase in user engagement. You can check it out here: https://www.freelancer.com/u/taskra. Want me to get the first version moving today?
$22 USD in 5 days
0.0
0.0

Hi, Building chat is easy. Building chat that stays fast and reliable is where experience matters. I can help you create a clean Android chat module with real-time messaging, replies, read receipts, offline storage, and a Material Design UI using Kotlin and Firebase. Share your current progress and I'll suggest the quickest path to a working MVP. Regards, Qamar
$18.20 USD in 40 days
0.0
0.0

This is exactly the kind of work I enjoy doing — projects like this combine precision and creativity, and I make sure both show through in every detail. With robust experience developing Android apps using Kotlin, I create clean, user-friendly modules like the real-time chat feature you need. My expertise in Firebase integration for instant messaging ensures reliable message delivery with local persistence. Through clear communication and seamless processes, I consistently deliver high-quality results. I'm happy to offer insight and maintain a smooth collaboration even if you decide not to hire me. Kind regards, Melissa Pringle
$15 USD in 7 days
0.0
0.0

I can develop the Android chat reply feature tailored to your lightweight text-based app. My experience includes building intuitive chat interfaces and optimizing message handling for smooth user interactions. I focus on clean, efficient code and seamless integration with your existing app structure to ensure quick, reliable replies. Do you already have wireframes or a written spec for this feature?
$20 USD in 7 days
1.3
1.3

I can develop the chat reply feature for your lightweight Android app, ensuring smooth and efficient text-based interactions. I have experience building clean, responsive chat interfaces tailored for mobile performance. My approach emphasizes simplicity and reliability, implementing a straightforward reply mechanism that enhances user communication without adding unnecessary complexity. Do you already have wireframes or a written spec for this feature?
$20 USD in 7 days
0.0
0.0

Hello, Our team has experience with Android development, particularly with Kotlin and Java, along with real-time database integration through Firebase. We have successfully delivered text-based chat applications, optimizing message delivery systems that include clear, structured code with thorough comments for maintainability. For your project, we can develop an efficient chat module that supports real-time communication, fulfilling your requirement for fast and reliable message delivery with read receipts. Our approach will include setting up Firebase for real-time text send/receive, integrating local message persistence to ensure recent chats remain accessible offline, and designing a basic UI that adheres to Material Design guidelines, allowing for future re-skinning. Our planned steps include setup of the Firebase database, implementation of the chat functionalities, testing for stability, and a smooth handoff. Thanks, PureCode Company
$19 USD in 5 days
0.0
0.0

Hello Client I reviewed your requirements for the Android chat module and the scope is clear: a lean, text-only app with real-time delivery, read receipts, and offline persistence, structured so it can be re-skinned later without rework. For architecture, I'd use MVVM to keep UI, data, and business logic decoupled. For real-time messaging, Firebase Firestore fits well here, message listeners and read-receipt flags map cleanly to its document model, and you avoid running a separate socket server. Room handles local persistence so recent threads stay visible offline and sync once connectivity returns. Screens: a placeholder login (Firebase Auth), a thread list, and a conversation screen using RecyclerView. Code stays modular, separate packages for auth, data, and UI, with clear comments for easy extension. Material Components handle layout and theming for easy re-skinning. Hand-off includes the full source in a Git repo with proper commit history, a README covering setup, key classes, and where to swap backend credentials, plus a signed APK for testing. I've built Firebase-based chat features before and know where footprint tends to bloat, so I keep things tight from the start. Let's hop on a quick call to align on timeline and confirm scope. Best regards, Sean
$15 USD in 40 days
0.0
0.0

Hi, I’m an experienced Project Manager with a strong background leading remote software teams and delivering fintech/web applications. I can manage sprint planning, backlog prioritization, stakeholder communication, and team coordination across Jira, Trello, Asana, Slack, Teams, and Zoom. I’m proactive, organized, and focused on keeping projects on schedule while minimizing risks. I’d be glad to discuss your roadmap and workflow.
$20 USD in 40 days
0.0
0.0

Hello! I've developed a similar lightweight chat app that improved real-time message delivery and user engagement significantly. I can share the implementation details in chat if you'd like. For your project, I suggest using Firebase for real-time messaging due to its ease of integration and scalability. I’d structure the code in a modular way to ensure clarity and maintainability, making it easy for you to adapt later. What specific challenges do you foresee with the real-time messaging implementation? If you’re open, I can share my previous build, and we can discuss how it fits your requirements. Looking forward to your thoughts!
$20 USD in 40 days
0.0
0.0

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