Flutter Sports Social App | Must First Pass Free Android GPS Background Tracking Demo Test (No Payment for Demo. Do Not Bid If You Cannot Complete This Test)

@infowider11

⭐️⭐️⭐️ Sports & Chatting App with Background GPS Tracking and Real-Time Messaging ⭐️⭐️⭐️ Hello, I checked the JD and you want to build a cross-platform sports and social app with a mandatory offline GPS tracking demo as the first step, followed by a scalable Flutter application featuring workout partner matching, messaging, location services, and activity tracking. Features: * Offline Android GPS tracking demo * Continuous background location collection * Real-time route and trail drawing with AMap * Stable tracking under lock screen and battery-saving modes * SMS-based authentication * Nearby users using location services * User profiles and account management * Sports activity tracking * Real-time chat integration * NetEase Yunxin SDK integration * PHP backend and REST APIs * Database architecture and management * Cross-platform Flutter development * Push notifications Let’s chat… Thanks

@webbookstudio

Hi there, We understand you're looking to develop a sports and social app that connects users with workout partners, focusing on features like GPS tracking, real-time messaging, and user profiles, with a critical first step being a free Android GPS background tracking demo test. At Webbook Studio, we have experience with Flutter and mobile app development, including background location tracking on both Android and iOS devices. For instance, we developed a music voting mobile app using React Native, which involved complex backend integrations and real-time updates. We're confident in our ability to deliver the required demo and subsequently develop the formal app, should the demo meet your requirements. Can you provide more details on how you envision the UI/UX design for the app, and whether you have any specific preferences for the design process? Feel free to message us to discuss the details! — Webbook Studio

@ykarora26

With a strong background in mobile app development, particularly in sports and fitness apps, I understand the importance of creating a seamless user experience. My previous projects involving real-time GPS tracking and map integration align perfectly with your requirements. Could you provide more details on the specific Chinese Android devices you prioritize for compatibility testing? Regards, Yogesh Kumar

@sunainawbst

Hi, I have carefully reviewed your requirements, including the offline GPS demo and the formal sports & chat application. I have strong experience building Flutter applications with background location tracking, real-time features, chat integration, maps, and scalable backend systems. We understand the challenges of keeping location updates running reliably in the background, including on customized Android devices. I’m comfortable starting with the offline Android demo as the first step and can deliver: * Stable background GPS tracking * Real-time route drawing using AMap * Source code, build instructions, and demo video * Clean, well-structured code ready for Phase 1 After the demo is approved, we can move on to the complete application, including SMS login, Nearby Users, NetEase Yunxin integration, activity tracking, user profiles, and the PHP backend. Due to NDA restrictions, I can’t publicly share links to similar projects. However, once we connect, I’ll be happy to share relevant work samples, architecture details, and demonstrations privately. A few questions: 1. Which Flutter version do you prefer for the project? 2. Will you provide the AMap API keys and NetEase Yunxin credentials for the demo? 3. Do you already have UI/UX wireframes for Phase 1, or should we assist with the design as well? I look forward to discussing the project and building a long-term partnership. Thanks! Purnima

@asifalimzd

Hi there, I can help you build the offline Android demo app with continuous GPS tracking and real-time route drawing on AMap, ensuring it works smoothly in both foreground and background with proper moving/stationary logic and full logging for testing purposes. Would you prefer the tracking layer to be implemented in native Kotlin for better stability on Huawei and Xiaomi devices, or should I start with a Flutter-based approach first? Kindly drop me a message to discuss more in detail. Thanks.

@seefattechnologi

SURE, I have evaluated the project description and highly able to complete it ---- Flutter Sports Social App-------I am a Mobile Application developer having 7 years of work experience with the expertise of React native/Xamarin/ Flutter/ Java and Kotlin (android) /Swift and objective (iOS )/ XML and Android XML Layouts (Android)/ Interface Builder and Storyboards (iOS). I have some queries to give you accurate time and price Please ping me to get started and provide you great results. Thanks

@installerpoint

Drawing from my 12+ years of full-stack development experience, I believe I'm the ideal candidate for your sports social app project. As a seasoned developer, I understand the importance of building a solid foundation and delivering a reliable product - which is why I have no qualms about creating an offline Android demo (that passes your extensive background tracking test) as the first step. With proven experience in Flutter and intimate knowledge of Android background locations—including vendor-specific restrictions—I can assure you a demo that exceeds your expectations. Moreover, my track record of efficiently publishing apps to major Chinese Android app stores gives me an edge. Your plan to use AMap for route rendering aligns perfectly with my skill set as I'm well-versed with this provider. Additionally, I have hands-on experience with third-party IM SDKs such as NetEase Yunxin, which could prove crucial in the second advanced feature phase. Overall, I offer you not only technical skills but also a problem-solving mindset and effective communication skills. My ultimate goal is to deliver an app that's stable, performant and brings real value to its users. I'm ready to pour my expertise into this project and deliver solid results within the stipulated time frame. Let's make this happen.

@ZohaibRoy

⭐⭐⭐⭐⭐ Build a Sports & Chatting App with Offline GPS Tracking Demo ❇️ Hi My Friend, I hope you're doing well. I just reviewed your project requirements and see you are looking for an experienced developer for your sports and chatting app. Look no further; Zohaib is here to help you! My team has successfully completed over 50 similar projects in app development. I will create a 100% offline Android demo app that meets your specifications, ensuring smooth GPS tracking and real-time route drawing. ➡️ Why Me? I can easily complete your offline demo app as I have 5 years of experience in Flutter development, specializing in GPS tracking, app publishing, and backend integration. My expertise includes Android location policies, user authentication, and SDK integration. Besides, I have a strong grip on technologies like PHP and AMap for map rendering. ➡️ Let's have a quick chat to discuss your project in detail, and I can show you samples of my previous work. Looking forward to speaking with you! ➡️ Skills & Experience: ✅ Flutter Development ✅ Android App Development ✅ iOS App Development ✅ GPS Tracking ✅ AMap Integration ✅ User Authentication ✅ PHP Backend Development ✅ SDK Integration ✅ App Publishing ✅ Real-Time IM ✅ Database Design ✅ Project Management Waiting for your response! Best Regards, Zohaib

@godesignpk

Hello, We went through your project description and it seems like our team is a great fit for this job. We are an expert team which have many years of experience on PHP, Mobile App Development, Android, Mobile App Testing, iOS Development, Backend Development, Flutter Lets connect in chat so that We discuss further. Regards

@skalogir

Hi, I understand you need a Flutter sports and chatting app, starting with a verifiable offline Android AMap demo for stable 5-second/15-second background GPS tracking, route drawing, logs, and Chinese Android vendor compatibility before Phase 1 development. I have experience with Flutter, Android background location services, AMap integration, PHP backend/API design, SMS login, LBS nearby users, IM SDK integration, app-store release workflows, and modular mobile architecture for iOS and Android. I am willing to build the offline demo first, then proceed with Phase 1 using Flutter, PHP backend, database schema, NetEase Yunxin integration, activity tracking, profiles, and store-ready testing within the required workflow. Q1: Will you provide AMap keys and real test devices for Huawei/Xiaomi/OPPO/Vivo validation? Q2: Should the demo be native Android first or Flutter-based Android demo? Q3: Can you share the Phase 1 UI/UX scope and SMS provider details after demo approval? Best regards, Stratos

@edwarddzi8f

Hi, I can help you with this project. I understand the demo test is the first step, and I am ready to build the offline Android GPS tracking app using Flutter and AMap. I have experience handling background location on Chinese Android devices like Huawei and Xiaomi, including workarounds for their battery optimization policies. I confirm I will complete the demo within 1 day. Let me know if you want to discuss.

@XanvraTECH

Hello, I am highly interested in your project for the Flutter Sports Social App. I have a strong background in Flutter, iOS Development, Mobile App Development, PHP, Android, and Backend Development, making me well-equipped to handle the requirements. I understand the importance of the initial offline Android demo test to demonstrate background tracking stability on various devices. - MY WORK STATS: ✨ https://www.freelancer.com/u/XanvraTECH I am confident in my ability to meet the outlined requirements and am willing to proceed with the demo as the first step. I look forward to discussing this project further and am available for a follow-up meeting to delve into more details. Best regards, Warda Haider

@thesurya9

I can build the required offline Android demo with continuous GPS tracking and real-time route drawing using AMap. The demo will meet all stability requirements on Huawei, Xiaomi, OPPO, and Vivo devices, including background/lock screen and battery saver conditions. I’ll provide source code, build instructions, and a video showing background tracking. Once the demo passes, I’m ready to deliver Phase 1 development with SMS login, nearby users (LBS), IM integration via NetEase Yunxin SDK, user profiles, and sports tracking. I have experience publishing apps to both the Apple App Store and Chinese Android stores, and I’m familiar with vendor-specific background location policies. Best regards,

@ciss26

Hello there, Hope you are doing well Your project is well-defined, and I’m interested in developing both the offline GPS tracking demo and the full Flutter sports social application. I have experience building Flutter applications with real-time GPS tracking, background services, maps, chat integration, and scalable backend architectures. I understand the challenges of maintaining stable background location tracking on Android, especially on manufacturers such as Huawei, Xiaomi, OPPO, Vivo, and Honor, where battery optimization and vendor-specific restrictions require careful handling. I confirm that I am willing to: Build the required offline Android demo as the first step. Use AMap for map rendering and route tracking. Deliver the source code, build instructions, and demonstration video. Follow your acceptance criteria and escrow payment terms. For Phase 1, I can develop: Flutter application for Android & iOS SMS authentication Nearby users using LBS Real-time chat integration with NetEase Yunxin SDK User profiles and activity tracking PHP backend with REST APIs and database architecture Complete source code, documentation, and deployment support Thanks & Regards Dheeraj K.

@vishal1145

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@technologiesit

As an accomplished cross-platform Flutter developer, I bring immense value in delivering your Sports Social App vision. Not only have I successfully built offline Android apps using GPS location tracking, but I've also ensured their compatibility with major Chinese Android devices, such as Huawei and Xiaomi. I comprehend the importance of stability under locked-screen and battery-saving modes without interrupting the tracking process, and have experience doing so effectively. My expertise also extends to Map integration, qualifying AMap for your China-based users. Moreover, my team's proficiency in NetEase Yunxin SDK uniquely positions us to handle the IM aspect of your project with expert precision. We've undertaken similar backend and SDK setups, ably utilizing PHP as you require. Our resolute approach guarantees smooth integration and a seamless user experience - hallmarks of our work that you'll thoroughly benefit from.

@kishanbwts

I understand the critical need for stable, continuous background GPS tracking on major Chinese Android devices with trusted location intervals. I have handled similar challenges for a fitness app targeting the Chinese market, where vendor-specific battery optimizations and location restrictions caused tracking interruptions. In that project, I implemented fine-tuned background services that dynamically adjusted location requests based on movement state, delivering seamless route tracking over 30+ minutes in locked and battery saver modes. For your demo, I will build the offline Android app using the AMap SDK exactly as you described, ensuring location is requested every 5 seconds when moving and every 15 seconds when stationary, with accurate logs of state, intervals, and timestamps visible onscreen. I’ll test on Huawei, Xiaomi, OPPO, and Vivo devices to confirm stable background tracking under all conditions. Could you clarify if you prefer a foreground service with notification for persistent tracking or a different approach? Also, do you want the logs exportable for debug? I am ready to deliver the offline demo within 1 business day, including source code, build instructions, and a demo video on real devices as requested. Once approved, we can proceed quickly with Phase 1. Looking forward to starting the demo test right away.

@CodeAnchors

Dear , I hope this message finds you well. I have thoroughly reviewed the project requirements for the Flutter Sports Social App and the essential first step of passing the Android GPS Background Tracking Demo Test. I understand the critical need for stability and functionality in the demo to proceed with the formal development phase. My expertise lies in PHP, Mobile App Development, Android, Backend Development, Flutter, and iOS Development, aligning perfectly with the project's demands. You can view my past work in my portfolio: ⭐⭐ https://www.freelancer.com/u/CodeAnchors ⭐⭐ My approach involves structured requirement confirmation, controlled planning, clean implementation, rigorous testing, and transparent milestone-based progress tracking. To ensure a successful collaboration, could you please clarify your top priority or business goal for this project? I am eager to discuss further details and finalize the scope of work smoothly. Looking forward to the opportunity to work together. Best regards, Muhammad Anas Khan

@invoketech

Hello! I read your Project Description attentively and saw that you require an experienced Flutter developer to build a sports social application, beginning with an offline Android GPS background tracking demo that demonstrates stable location tracking, route drawing, and reliable performance on major Chinese Android devices before proceeding to full-scale development. We have 9+ years of experience in Flutter, Android, iOS, real-time applications, GPS tracking, maps integration, chat platforms, and scalable backend development. We understand the challenges of implementing reliable background location tracking on manufacturers such as Huawei, Xiaomi, OPPO, and Vivo, and can develop a solution that follows Android background execution policies while maintaining accurate tracking and battery efficiency. After successfully completing the demo, we can continue with Phase 1 by developing the complete sports social platform, including SMS authentication, nearby user discovery, activity tracking, NetEase Yunxin IM integration, PHP backend development, REST APIs, database architecture, and a scalable foundation for future features. We are available to discuss the demo requirements, acceptance process, and overall project architecture before getting started. Thanks Invoke Tech