Flutter Sports Social App | MUST PASS Offline GPS Background Tracking Demo Test firstly

@infowider11

⭐️⭐️⭐️ Flutter Sports & Chat App with Advanced Background GPS Tracking ⭐️⭐️⭐️ Hello, I checked the JD, and you want to build a Flutter-based sports and social networking app that connects workout partners, with a mandatory offline GPS tracking demo followed by a full-featured cross-platform application featuring location services, chat, and activity tracking. Main Features: * Flutter Cross-Platform Development (Android & iOS) * Offline GPS Tracking Demo * Continuous Background Location Collection * Real-Time Route & Trail Drawing * Adaptive Tracking Intervals * Background & Lock Screen Stability * Battery Saver Mode Compatibility * GPS State & Accuracy Logging * SMS Authentication * Nearby Users (LBS) * User Profiles & Account Management * Sports Activity Tracking * Real-Time Chat Integration * NetEase Yunxin SDK Integration * PHP Backend Development * REST API & Database Architecture * AMap Integration for China * Secure Authentication & Data Storage * Push Notifications Let’s chat… Thanks

@opencollar

Hi, I know how important it is for your app to run smoothly in the background without losing GPS tracking in any situation. Do you sometimes feel frustrated with location interruptions or device-specific issues ruining user experience? I get how tricky it can be to keep a stable, device-agnostic GPS tracking system especially in China’s custom OS environments. I will develop a solid offline demo with continuous GPS collection, accurate trail visualization, and stable background operation, even in low power mode, on Huawei, Xiaomi, and other Chinese devices. I’ll make sure to log each state change (moving or stationary), the tracking intervals, and timestamps so you can easily verify the app’s performance. For the main app, I will handle user login, real-time chat with your chosen IM SDK, and map integration via AMap as needed, making everything straightforward and well integrated. I will also prepare full documentation and source code, plus support after launch to help you grow confidently. Let’s chat about the detailed plan and work towards building something bigger together. I believe clear communication and quality work save time and boost your project’s success. Looking forward to discussing your ideas and making them real. Regards, Nick

@kamran2012

I can help with this, I will build the offline Android demo first — continuous GPS tracking at 5-second moving and 15-second stationary intervals, with real-time route drawing on a map, verified under lock screen, background, and battery-saver modes on Huawei and Xiaomi devices. For Chinese Android OEMs, I will implement vendor-specific workarounds — Huawei's PowerGenie whitelisting, Xiaomi autostart permissions, and OPPO/Vivo battery optimization exclusions — using a foreground service with a persistent notification to prevent the OS from killing the process. This is where most tracking apps fail silently. I confirm I am willing to build the demo as the first step. Questions: 1) For the demo, do you have specific Huawei EMUI and Xiaomi MIUI versions you will test against? Looking forward to discussing further. Best regards, Kamran

@asifalimzd

Hi there, I am leading a team of senior Flutter and mobile app developers and would like to work for you as per your requirements. I am really interested to start this project for you. I would like to discuss in detail so I can review the demo acceptance process and device testing requirements before starting immediately. Kindly drop me a message and discuss more with me. Thanks.

@sunainawbst

✅ React Native | Firebase |Mobile App Development Expert Hi, Hope you are doing good. I have read your requirements carefully and can give you 100% assistance as a React Native Developer for building or enhancing your mobile application. I specialize in creating fast, stable, and scalable apps for both iOS & Android, backed by a secure and efficient Firebase architecture. I’d love the opportunity to discuss your idea further and collaborate on developing a modern, intuitive, and impactful app. (Note: Please consider the current budget as flexible — we can finalize it after discussing the complete scope.) Thanks & Regards, Kajal

@C0RETECHIES

Hi there, We understand the core challenge is building a background GPS service that survives aggressive task killing on Chinese Android ROMs. Your demo-first approach validates this critical component, which differentiates user states (moving/stationary) to optimize polling. Once proven, this engine becomes the heart of the Flutter social app, enabling LBS partner discovery, NetEase Yunxin-powered chat, and activity logging. Technical approach: The demo will use a Flutter foreground service with platform-specific code to handle wakelocks and battery exemptions on EMUI/MIUI. Phase 1 will feature a PHP backend, PostgreSQL with PostGIS for efficient geospatial queries, and native integration of the NetEase/AMap SDKs. Core modules: - Resilient GPS Engine: A persistent background service adapting its poll interval based on speed, with transparent logging. - LBS Matching: Efficient backend geospatial indexing and querying for nearby user discovery. - IM & User Sync: Linking our PHP user system with NetEase Yunxin for real-time chat. - Activity Logging: Capturing route data from the GPS engine and rendering it on AMap. We have deep experience with Android's location APIs and vendor-specific power management challenges. We are ready to build the required offline demo as the first step. Regards, Rohit

@DeveloperStation

Hi there, We’ve developed multiple fitness apps with features like GPS tracking, user profiles, and real-time chat. One of our products, Descripio, uses a similar approach to connect users for product reviews, where we integrated Google and Amazon login systems and built a robust backend to manage user-generated content. For your project, we can use the NetEase SDK for real-time chat and integrate with PHP-based backend systems. We’ve worked extensively with PHP frameworks like Laravel and CodeIgniter, and we’re also experienced with server management and CI/CD pipelines. We’re fully committed to delivering a high-quality product and are available for discussions anytime. Let’s schedule a 10-minute introductory call to discuss your project in more detail. I’m eager to learn more about your exciting project. Best, Adil

@ZohaibRoy

⭐⭐⭐⭐⭐ Build a Sports and Chatting App with Offline GPS Tracking ❇️ Hi My Friend, I hope you are doing well. I reviewed your project and see you are looking for an app developer for your sports and chatting app. Look no further; Zohaib is here to help you! My team has successfully completed 50+ similar projects focused on mobile app development. I will build the offline demo app with continuous GPS tracking, ensuring it meets all your requirements. ➡️ Why Me? I can easily create your offline Android demo app as I have 5 years of experience in mobile app development, specializing in Flutter, GPS tracking, and background services. My expertise includes integrating third-party SDKs, optimizing performance, and ensuring compliance with Android policies. I also have a strong grip on backend development with PHP and experience with app store publishing. ➡️ Let's have a quick chat to discuss your project details. I would love to share samples of my previous work. Looking forward to our conversation! ➡️ Skills & Experience: ✅ Flutter Development ✅ Android App Development ✅ GPS Tracking ✅ Background Services ✅ API Integration ✅ PHP Backend Development ✅ Database Design ✅ User Authentication ✅ Real-time Communication ✅ App Store Publishing ✅ Performance Optimization ✅ Testing and Debugging Waiting for your response! Best Regards, Zohaib

@Herculesz

Hi I can build the sports and chatting app with Flutter for iOS/Android, PHP backend, AMap route rendering, NetEase Yunxin IM integration, SMS login, LBS nearby users, profiles, and activity tracking. The main technical challenge is stable background GPS tracking on Chinese Android devices, where Huawei, Xiaomi, OPPO, Vivo, and Honor battery policies can interrupt location updates even when standard Android code looks correct. I would solve this with foreground services, precise location permissions, wake-lock strategy where appropriate, vendor-specific battery guidance, movement-state logic, persistent logging, and real-device testing. For the offline demo, I am willing to build the GPS tracking prototype with 5-second moving updates, 15-second stationary updates, speed-based state detection, visible logs, and route drawing on the map. For Phase 1, I can structure the app around clean Flutter modules, secure PHP APIs, MySQL schema design, Yunxin user binding, nearby-user queries, and sports activity records. I can also handle app-store readiness for iOS and major Chinese Android channels, including permission descriptions and background-location compliance. My focus will be stable long-term tracking, clean documented code, and reliable integration between location, chat, profiles, and backend services. Thanks, Hercules

@Srashtasoft

Hi there, I have read your project requirement. You need an experienced Flutter developer with deep expertise in Android background location services and Chinese device optimizations to build a sports and chat platform with stable GPS tracking, real-time IM integration, and a PHP backend architecture. We have experience developing cross-platform applications with Flutter, implementing continuous background location tracking, and building scalable backend systems. We understand the challenges posed by vendor-specific battery optimizations on Huawei, Xiaomi, OPPO, Vivo, and Honor devices, and can design a reliable solution that supports long-term operation. We are also comfortable integrating third-party SDKs such as NetEase Yunxin and are willing to start with the offline GPS tracking demo as the first step. A few questions before we proceed: ============================= Which Android versions and device models will be used for demo validation? Will the offline demo use AMap SDK from the beginning or another map provider? Do you require GPX/KML export or local storage of tracking logs during the demo phase? Will Phase 1 include push notifications and friend requests in addition to IM and nearby users? Best Regards, SrashtaSoft Team

@mahig47

Hello! A sports and social fitness platform like this is a strong and technically demanding concept because it combines real time GPS tracking, user matching, chat, and activity based engagement into a single ecosystem. I’ve reviewed your requirements and understand the importance of building a highly stable background location tracking system first, since it forms the foundation of user experience and overall platform reliability. The app can be developed in phases, starting with a robust Android focused demo for continuous GPS tracking and route visualization, ensuring stability under background conditions, lock screen, and battery saving modes. After validation, the full platform can be expanded into a cross platform Flutter application with features like nearby user discovery, real time chat, sports activity tracking, and a scalable PHP backend integrated with NetEase Yunxin for messaging. Send me a message and let's discuss the demo validation criteria, tracking behavior, and the roadmap for the full social fitness platform. Best regards, Nikita Gupta.

@mrresearcher99

Hello, I have 10+ years of experience in mobile application development, including Flutter, Android, iOS, real-time location tracking, social networking applications, and backend development using PHP and Laravel. I have worked on GPS-intensive applications requiring background location tracking, route recording, geolocation services, activity monitoring, and real-time user interactions. I understand the challenges associated with vendor-specific Android restrictions on Huawei, Xiaomi, OPPO, Vivo, and Honor devices, including battery optimization policies and background service limitations. I am comfortable building the offline Android proof-of-concept as the first step, including continuous GPS tracking, adaptive intervals based on movement state, route visualization, detailed logging, and testing under lock-screen and battery-saving conditions. Upon successful validation, I can deliver the complete Phase 1 platform, including Flutter mobile apps, PHP backend architecture, API development, NetEase Yunxin integration, nearby users functionality, and sports activity tracking. I am available to start immediately and can follow the escrow-based milestone structure outlined in the project requirements. Best regards

@ciss26

Hello, I hope you are doing well. I understand that you are looking to build a SPORTS AND SOCIAL 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.

@wpexpert0141

Hi, I had a chance to review your project and it looks interesting. Rather than sending a generic proposal or making assumptions based only on the description, I prefer to first understand the specific goals, constraints, and expectations behind the project. In many cases, the actual challenge is not the development itself but ensuring the solution fits the workflow and scales properly as the project grows. I'd be interested in discussing a few details and sharing some initial observations after learning more about your requirements. Thanks for your time. Shiv,

@codefusion53

Hi, I have extensive experience developing Flutter apps with robust offline background GPS tracking tailored for Chinese Android devices like Huawei, Xiaomi, OPPO, and Vivo. I understand the strict requirements around stable location updates under lock screen and battery saver modes, having implemented similar solutions that handle moving and stationary states with configurable intervals. I’m comfortable working with AMap for route rendering and have successfully integrated third-party IM SDKs in past projects. I also have a proven track record publishing apps on both Apple App Store and key Chinese Android stores, ensuring smooth compliance with vendor policies. I am ready to deliver your offline GPS demo within 1 business day, including source code, build instructions, and a demonstration video. This will verify my ability to meet your non-negotiable stability test before moving forward. I am confident we can then proceed to Phase 1, building the full sports and chat app with backend, API, and Yunxin SDK integration on schedule. Looking forward to starting with the demo and showing you the quality and reliability you need. Best, Justin

@Mahihassi

As an experienced Flutter developer, I understand the profound importance of delivering exceptional user experiences. This is precisely why I am the perfect candidate to execute your project. I have successfully built and published numerous state-of-the-art apps on the Apple App Store, such as Talkshift. My portfolio consists of stable, long-term operational apps that demonstrate my deep understanding of cross-platform development with Flutter. In addition to my expertise in Android-specific development and publication, I have a comprehensive understanding of Chinese Android devices such as Huawei, OPPO, VIVO, Xiaomi, and Honor. Through my previous experience integrating third-party IM SDKs like NetEase Yunxin, I have shown an adeptness for overcoming vendor-specific restrictions. Moreover, my skills extend to backend development using PHP and the integration of different SDKs. You can trust me to build a rock-solid backend architecture for your Phase 1 using NetEase Yunxin which will be fully integrated with your existing user system. Lastly, my ability to build intelligent systems will add significant value to your goal of sports activity tracking and offline GPS background tracking demo. Let's get started asap!

@toriquldev123

Dear Client, I’m Md Toriqul Islam, a full-stack and mobile app developer with 10+ years of experience in Flutter, real-time location systems, and large-scale mobile applications. I understand you are building a sports and social connection app that requires strict background GPS tracking behavior, including adaptive location intervals based on movement state, continuous route drawing, and stable performance under lock screen, background execution, and battery-saving modes—especially across Android OEM environments like Huawei, Xiaomi, OPPO, Vivo, and Honor. I also understand that Phase 1 includes SMS authentication, nearby users (LBS), real-time chat using NetEase Yunxin, user profiles, and sports activity tracking, with a PHP backend architecture. I have strong experience in Flutter-based location tracking systems, background services, geofencing, and real-time mobile data synchronization, including handling platform-specific restrictions and optimizing battery-efficient GPS tracking. My skills in Flutter, Android native services, PHP backend development, REST APIs, and IM SDK integration (including third-party messaging systems) ensure reliable delivery of your Phase 1 requirements. I’m ready to start immediately and would be happy to proceed with the demo phase for validation. Looking forward to hearing from you. Best regards, Md Toriqul Islam

@pauldinhdev

Hi, this is Paul from Canada. I understand you need a Flutter-based sports and chatting app that connects users via LBS, real-time IM, and activity tracking, with strict requirements for continuous background GPS tracking on major Chinese Android devices. The project emphasizes robust offline demo validation before full development. I have extensive experience with Flutter mobile apps, background location handling on Huawei, Xiaomi, OPPO, and Vivo devices, and integrating third-party IM SDKs such as NetEase Yunxin. I can deliver a stable offline Android demo that records continuous GPS (5s moving, 15s stationary) with background/lock-screen operation and battery-saving optimization. Questions: 1. Should the offline demo replicate the map rendering (AMap) as well, or focus solely on GPS logging and background stability? 2. For the full Phase 1, do you prefer modular Flutter architecture with separate services for GPS, IM, and activity tracking for easier testing and maintenance? I am ready to build the offline proof-of-concept immediately, then proceed to Phase 1 with SMS login, nearby users, user profiles, and sports activity tracking integrated with the Yunxin SDK. I'm open to join a video call to discuss about what you're envisioning in detail. Looking forward to discussing further. Paul

@mughiraaa

Hello, Your project immediately stood out because it combines location tracking, real time communication, and activity based social features, all of which require careful planning and strong mobile development experience. I have worked on GPS focused applications, real time messaging systems, and cross platform mobile products where stability and battery efficiency were critical. I understand the challenges of maintaining background location tracking across different Android manufacturers, including Huawei, Xiaomi, OPPO, and Vivo. I am comfortable starting with the offline proof of concept and can provide source code, setup instructions, and a demonstration video showing tracking performance under the conditions you outlined. After a successful demo, I can take ownership of Phase 1, covering mobile development, backend architecture, API design, database structure, and Yunxin integration. I would welcome a short discussion to review the testing criteria and expected workflow. I am confident I can help deliver this project successfully. I will share my portfolio in chat I look forward to hear from you. Thanks Best Regards, Mughira