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I need a lightweight Android application that keeps my customers instantly informed about their purchase progress. The core task is to build a stable push-notification system that fires whenever an order moves to a new status in our back-end. Each notification must be clear, timely, and triggered exactly once per status change so users never miss an update or receive duplicates. My API team will expose a simple REST endpoint returning the current order state; you can poll it or use webhooks—whichever gives the most reliable result on Android. Feel free to integrate Firebase Cloud Messaging if it speeds things up; I just need the service to scale and to handle basic fail-over scenarios. At this stage I am not asking for full real-time map tracking or a user-login module, but I would like the architecture left open so we can slot those features in later without a rewrite. Deliverables • Android Studio project with clean, commented Kotlin or Java code • Signed release APK plus a debuggable build for testing • Documentation showing how to connect to my endpoint, trigger sample status changes, and publish the app to Google Play • Brief hand-off call or video walkthrough once everything passes review Acceptance criteria • Notification arrives within 5 seconds of the status change hitting the API • Tapping the alert opens a simple screen displaying the current order stage and timestamp • No duplicate alerts for the same status on the same device • Works on Android 8.0 (API 26) and above If you have questions about the endpoint format or need sample payloads, let me know and I’ll supply them right away. Looking forward to seeing how you can make this roll out smoothly for our customers!
Project ID: 40698893
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78 freelancers are bidding on average ₹2,573 INR/hour for this job

As an experienced Android developer with a strong background in mobile app development, I am confident that I can deliver the lightweight Android Order Status Notification App you need. With a specific focus on building stable push-notification systems, I have successfully delivered similar projects with the utmost precision, ensuring clear and timely communication for users, eliminating any possibility of missed updates or duplicates. My expertise in utilizing REST APIs for information retrieval and Firebase Cloud Messaging for instant messaging makes me the perfect fit for this project. Your API's REST endpoint won't pose a challenge for me as I'm well-versed in both polling and webhooks techniques to ensure reliable results. Finally, I understand that your architectural strategy should accommodate potential future features like real-time map tracking or user-login modules, and I guaranteed that your app will be built with extensibility in mind. With my knowledge of Kotlin and Java combined with a desire to surpass your expectations, hiring me would be an excellent decision towards witnessing smooth rollouts and satisfied customer experiences on Google Play. I am excited about the possibilities of working together to achieve your project goals!
₹3,500 INR in 40 days
9.4
9.4

Hello, i am an Android expert and i can implement Notifications quite quickly. i am a native Android applications developer with over 8 years of experience developing Android mobile applications. I have completed more than 515 projects. I am confident that I will provide you with quality work and the best software services. Let's chat to proceed.
₹2,500 INR in 40 days
8.9
8.9

The main challenge here is making sure that notifications are triggered exactly once per status change, arriving within 5 seconds, and avoiding those duplicates. This can often stem from how the API is polled or how Firebase Cloud Messaging is configured. And I’ll set up the notification system to listen for status changes efficiently, using either polling or webhooks based on what works best for your backend. I can go ahead and complete this work first, so you can test the functionality before making any payment or awarding the project, you'll only create the milestone once you're satisfied with the result—no risk on your end. I'm ready to start immediately and can deliver the Android Studio project, signed APK, and documentation as specified for 2999 INR, which I think is a pretty fair price for the work involved. Rajavel - Android Developer specializing in Kotlin and Firebase.
₹2,999 INR in 10 days
7.0
7.0

Hi I will be able to help you. Please message me so that we will have detail technical discussion. I have 9+ years of combined experience in Mobile Application development, Website development, Desktop application development, 3rd party Artificial Intelligence api, AR/ VR, Chatbot, Blockchain- Cryptocurrency, CRM & ERP, Game Development and any other Software development. I am having expertise in Native on Android Java, kotlin and IOS Swift, and For Hybrid Cross platform on Flutter Dart & React- Native, and for web and backend on react js and node js, Python Django. Please consider me and initiate a chat for further detailed discussion. Regards, Anju Logical Soft Tech Pvt Ltd, Indore(M.P)
₹2,500 INR in 40 days
6.6
6.6

Hi there, You need a lightweight Android app focused on one thing done reliably, delivering an instant notification whenever an order status changes, without duplicates. We can build this in Kotlin with Firebase Cloud Messaging and a reliable backend/webhook flow, including status-change tracking, deduplication, retry/failover handling, and a simple notification-to-order-status screen. We’ll keep the architecture modular so authentication, real-time tracking, and additional customer features can be added later without rebuilding the core. We’ll also handle Android 8+ compatibility, testing against your API, signed APK/release build, Play Store readiness, documentation, and handover. Could you share a sample API response and explain whether your backend can send webhooks when an order status changes? Thank You Rohan
₹2,500 INR in 40 days
6.6
6.6

Hello, I hope you are doing well. I understand that you are looking to build a 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.
₹2,500 INR in 40 days
7.2
7.2

As an experienced Full Stack Developer proficient in Java, Mobile App Development, and PHP, I am the ideal choice to build your Android Order Status Notification App. Over the course of my 8+ year career, I have created over 200 successful projects transforming strategies into powerful digital solutions—precisely what your venture needs to succeed. My unrivaled understanding in end-to-end development will ensure I deliver a lightweight and stable push-notification system that satisfies your requirements. Whether you prefer polling or webhooks for your RESTful API integration, I will leverage the approach that provides the most reliable result on Android.I will also adopt Firebase Cloud Messaging where necessary to enhance scalability and handle fail-over scenarios. Throughout the process, I commit to keeping the architecture open-ended for any future addons such as real-time map tracking or user-login module; saving you from potential costly rewrites. I guarantee a top-notch job with a signed release APK, clean commented code, concise documentation for easy future reference & self- update. Put in simpler terms: partnering with me guarantees clean code, smart architecture, and most importantly scalability to help drive results your need for your business. Let’s build something amazing together!
₹2,500 INR in 40 days
6.4
6.4

Hi, As per my understanding: You need an Android app delivering exactly-once push notifications when order status changes on your backend, arriving within 5 seconds, no duplicates, no missed updates, opening to a simple order status screen on tap, and architected so login and real-time tracking can be added later without a rewrite. Implementation approach: I would use Firebase Cloud Messaging triggered by your backend on status change, rather than client-side polling, since polling introduces both latency and battery drain that make the 5-second target unreliable at scale, server-pushed notifications are what actually guarantee timely delivery. To prevent duplicates, I would tag each notification with a unique status-change ID from your API and store recently processed IDs locally on-device, checking against that before displaying an alert, that dedup logic is what actually satisfies exactly-once delivery rather than just hoping FCM doesn't redeliver. For fail-over, I would add a lightweight periodic sync as backup, so if a push is missed due to connectivity issues, the app catches up on reconnect without duplicating already-shown notifications. I would structure the order-status screen and data layer now so login and map tracking slot in later as separate modules rather than requiring architectural changes. A few quick questions: 1. Can you share a sample payload from your status endpoint so I can confirm the exact fields available?
₹2,500 INR in 40 days
5.9
5.9

Expert Android Developer for Push Notifications I can build a lightweight Android notification system that reliably keeps customers updated whenever their order status changes. I recommend Kotlin + Firebase Cloud Messaging (FCM) with a backend-driven notification flow. This provides a scalable foundation while keeping the architecture open for future login, tracking and other features. Key deliverables: * Clean Android Studio project with maintainable Kotlin code * FCM push notification integration * Reliable status-change detection and exactly-once notification handling * Duplicate prevention using order/status identifiers and local state * REST API integration with your endpoint * Notification tap → order status and timestamp screen * Error handling and basic failover/retry logic * Android 8.0+ support * Signed release APK and debug build * Documentation for API connection, test status changes and Play Store publishing * Final walkthrough/handover I’ll structure the notification flow so status changes are processed safely and future real-time tracking can be added without rebuilding the application architecture. Looking forward to hearing from you. Thanks, Viral
₹2,500 INR in 40 days
6.0
6.0

Having successfully delivered diverse projects across web and mobile development, I'm confident in my ability to create a robust Android Order Status Notification App for you. My 14+ years of experience encompassing full-stack development, including proficiency in both Java and Kotlin, gives me the flexibility to adapt and implement your preferred language in the most effective way possible. Moreover, my knowledge of REST endpoints and webhooks will enable me to optimize your app by choosing the approach that guarantees reliability and scalability. Your project requirements speak volumes about your concern for user-experience, which resonates with my core values as an app developer. My forte in front-end development will help me craft a creative and intuitive UI/UX design that'll contribute to seamless navigation. Furthermore, I'll ensure that each notification is clear, timely, and never duplicates, so users never miss an update. To bolster my case further, I'm well-versed with Google Play's publishing protocols and will provide you thorough documentation making it easier for you to manage post the project's completion. Additionally, as you've identified "no rewrite" as an important factor for your future plans, I guarantee to keep the architecture open-compatible for future integration. In a nutshell, you can count on me for high-quality code execution while maintaining utmost transparency throughout our work together.
₹2,500 INR in 40 days
5.0
5.0

Hello, I would love to work on your project. I have solid experience in designing and developing modern, responsive, and high-performance websites that are visually appealing and optimized for speed, SEO, and user experience. I carefully read project requirements before starting and ensure every detail is implemented exactly as requested. Whether it's a landing page, business website, eCommerce store, bug fixing, Bootstrap, HTML, CSS, JavaScript, PHP, WordPress, or custom web development, I can deliver clean, scalable, and well-structured code. My priority is quality, timely delivery, and clear communication throughout the project. I provide regular progress updates and remain available for revisions until you are completely satisfied with the final result. I believe in building long-term relationships with clients by delivering reliable work and exceeding expectations. If required, I can also suggest improvements to enhance the design, performance, and overall user experience of your website. I am ready to start immediately and can dedicate my full attention to your project. Let's discuss your requirements in detail so I can provide the best solution within your budget and timeline. Thank you for considering my proposal. I look forward to working with you and delivering excellent results. Best Regards, Yashvendra Singh Full Stack Web Developer
₹2,500 INR in 40 days
4.1
4.1

Hi, Thanks for sharing your project. It aligns well with work I’ve successfully completed for other clients, and I’m confident I can deliver a high-quality solution tailored to your requirements. Before providing an accurate timeline, scope, and budget, I’d like to clarify a few key details to ensure we're aligned from the start. Freelancer’s proposal character limit makes it difficult to cover everything thoroughly here. If you're available, let's connect via chat. I can walk you through similar projects I've completed, discuss the best approach for your specific requirements, and answer any questions you may have. Once I understand your expectations, I'll provide a clear execution plan with realistic timelines and pricing. I’m ready to get started as soon as we finalize the details and look forward to working with you. Best regards, Mayank Sahu
₹2,500 INR in 40 days
4.0
4.0

Hi there, I can build your lightweight Android notification app in Kotlin using Firebase Cloud Messaging (FCM) to deliver reliable, sub-5-second alerts with zero duplicate triggers. I will set up local state checks to guarantee exactly-once notifications, wire up deep linking so tapping the alert opens the order stage and timestamp directly, and structure a clean, modular architecture ready for live maps or authentication later. You will receive a clean Android Studio project, signed APK, step-by-step setup documentation, and a video walkthrough. Ready to review your REST endpoint format and start immediately. Best regards, Nikhil Chandra Roy
₹2,500 INR in 40 days
3.9
3.9

--- Hi, I can build this order-status notification app end to end using Kotlin, with Firebase Cloud Messaging for reliable, scalable push delivery — webhook-triggered from your backend rather than polling, since webhooks are more battery-efficient and give faster, more reliable delivery on Android. To prevent duplicates, I'll maintain a local Room database record of the last-notified status per order, so a notification only fires when the incoming status genuinely differs from what's already shown on that device. Tapping the notification opens a simple screen showing current order stage and timestamp. I'll architect with clean separation of concerns so map tracking or login can be added later without a rewrite. Deliverables: Android Studio project with commented code, signed release APK plus debug build, documentation for endpoint connection and Play Store publishing, and a hand-off walkthrough. Will review your API response format and status list to finalize integration and confirm the sub-5-second target is achievable.
₹2,500 INR in 40 days
4.0
4.0

For the 5-second delivery target, I would use Firebase Cloud Messaging triggered by your backend at the moment an order status changes—not periodic app polling. My profile is new, but I bring 9+ years of mobile and backend development experience, including REST APIs, Firebase, and production-ready Android architecture. I will build the Android app in Kotlin with a clean MVVM structure, FCM token registration, notification channels for Android 8+, and a simple order-status screen opened from the notification. Every event will carry a unique order ID, status version/event ID, and timestamp; the app will store processed event IDs locally to prevent duplicate alerts, even if FCM retries delivery. The API integration will remain modular for future login, tracking, and richer order views. I will include error/retry handling, a signed APK and debug build, clear endpoint/FCM setup notes, and a handover walkthrough. Please share one sample order-status payload and confirm whether your backend can call an FCM endpoint/webhook when a status is updated.
₹2,500 INR in 40 days
3.6
3.6

Hello, I carefully reviewed the requirements. The key challenge is not simply displaying notifications, but reliably delivering each order-status change once, without duplicates, while the app is backgrounded or terminated. I have around 8 years of native Android experience with Java and Kotlin, including REST APIs, background processing, local databases, and notifications. I would first confirm the event and device-mapping flow, then implement the Kotlin app with FCM and persistent event deduplication. Finally, I’ll test delivery, retries, background/terminated states, notification taps, and Android 8+ compatibility. You will receive the complete Android Studio source, signed and debug APKs, integration documentation, and a hand-off walkthrough. My rate is ₹2,500/hour with availability of 20 hours per week. Can your backend emit an FCM/webhook event with a unique status-change ID, or does it currently only provide a REST status endpoint? Without user accounts, how should each device be linked to the correct order: order code, QR code, or secure link?
₹2,500 INR in 20 days
3.4
3.4

Hello The exactly-once requirement stood out. For this app, the notification itself is fairly simple; the harder part is making sure a status change produces one reliable alert without duplicates, while still meeting the five-second target. I’d probably make the backend status change the source of truth and use an idempotent notification flow, rather than relying on the Android app to decide whether an update has already been sent. Keeping the order-state layer separate should also leave room for tracking and login later without rebuilding the notification system. Is your API team already able to provide a webhook when the order status changes? Best regards, Akash Goel Your Partner for Smart Digital Solutions
₹2,500 INR in 50 days
3.2
3.2

I built an order-tracking Android app last year where FCM pushed status changes and the backend sent the data payload - that's basically your setup. For your case I'd go FCM data messages (not polling) so alerts land within your 5-second window and battery stays fine. The dedupe part I'd handle with a status ID stored locally so the same status never fires twice on a device, even across app restarts. Tapping the notification opens a single order-stage screen with the timestamp. I'll keep the architecture modular so login and map tracking slot in later without tearing things apart. Kotlin, targeting API 26+, plus signed release and debug builds and a short walkthrough. Can you share a sample payload so I can confirm the notification structure? - Prateek
₹2,500 INR in 12 days
3.0
3.0

I will build the Android app around Firebase Cloud Messaging (FCM) with a reliable backend-driven status notification flow, ensuring each order status change generates exactly one notification and the alert opens the latest order stage with its timestamp. The main challenge is avoiding duplicates while keeping delivery under 5 seconds. I will use a unique order-status event ID/state transition record on the backend, with device-side idempotency checks and FCM token management, so repeated API responses or retries cannot create duplicate alerts. I will structure the project in clean Kotlin using MVVM/Clean Architecture, Repository pattern, Retrofit for REST communication, Room for local notification/event tracking, and FCM for push delivery. Android 8+ notification channels and background restrictions will be handled correctly. Implementation steps: Review your API payload and status flow. Design the notification/event architecture. Integrate REST API and FCM. Implement exactly-once status handling and failover. Build the order-status screen and notification deep-link. Test Android 8+ and duplicate/retry scenarios. Provide signed APK, debug build, source code, documentation, and handover walkthrough.
₹2,500 INR in 40 days
3.2
3.2

I can build this lightweight Android app in Kotlin with Firebase Cloud Messaging, reliable status-change handling, and duplicate prevention. I’ll integrate your REST API, design the notification flow for fast delivery, and ensure tapping notifications opens the latest order status and timestamp. The project will support Android 8+, include clean architecture for future login/tracking features, signed/debug APKs, documentation, testing, and a complete hand-off walkthrough.
₹2,500 INR in 40 days
2.6
2.6

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