Mobile Android & iOS Developer

@C0RETECHIES

As a seasoned Mobile Android & iOS Developer with significant experience in both Flutter and React Native, I'm confident that I am an excellent fit for the job. My career spans more than four successful years—with over three years primarily invested in Flutter and React Native application development. Throughout my journey, I've launched multiple applications on both App Store & Google Play—achieving tremendous impact. Additionally, I possess a deep understanding of Swift and Kotlin as well as the innate creativity required to work with native SDKs effectively. This ranges from iOS background modes to Android foreground services; I have a wealth of knowledge in all necessary areas. In the realm of this project, my Bluetooth LE device experience and familiarity with offline-first data with databases like SQLite/Room/Drift positions me synonymously with the needs described. What's more, is my understanding of iOS HealthKit / Health Connect, making me highly preferable for this task ahead. With Core Techies as my backbone—a company renowned for seamlessly integrating native iOS/Android SDKs into cross-platform frameworks—I can confidently say we are equipped and excited to take on any challenge this project presents. Allow inklings of AI-assisted tools such as Claude Code strengthen my point: our skills go beyond the ordinary—they're tailored to meet changes while producing efficient results; that's a promise!

@zeeshan5121472

Hi, after reviewing the requirements carefully, I am interested in this project. I have strong Flutter experience with iOS and Android development, native integrations, REST APIs, Firebase, offline data, and production app deployment. I am comfortable working with Swift and Kotlin and can implement native platform bridges when required. I can also work with BLE and device integrations, background services, local databases, synchronization, charts, and App Store and Google Play releases. I am comfortable with AI assisted development tools and can contribute independently to a production level mobile application.

@OutsourceMan

Hi, Your requirements point to a project where cross-platform speed and native reliability need to work together, especially for BLE, background sync, and health data. My approach is to keep the app modular so native integrations remain maintainable as the product grows. Methodology: Build a clean Flutter architecture with native iOS (Swift) and Android (Kotlin) modules connected through Platform Channels when SDK access is required. Structure BLE communication with a resilient connection layer, background handling, and automatic reconnect logic. Implement an offline-first data flow using local storage and queued synchronization to keep data consistent. Integrate REST/Firebase or Supabase APIs with secure authentication and error recovery. Build responsive dashboards with clear charts and health metrics while respecting platform privacy requirements. Validate background modes, foreground services, TestFlight, Play Console releases, and app-review readiness before deployment. The focus is on a production-ready codebase that's easy to extend with additional devices, SDKs, and future health features.

@ixorawebmob

Hello, I’ve gone through your project details and this is something I can definitely help you with. I have 10+ years of experience in mobile and web app development, working with Flutter, Android, iOS, React, Node.js, and APIs. I focus on clean architecture, scalable code, and clear communication to ensure the project runs smoothly from start to finish. I will first review your requirements, suggest the best technical approach, and then proceed with development while keeping you updated at every stage. Here is my portfolio: https://www.freelancer.in/u/ixorawebmob I’m interested in your project and would love to understand more details to ensure the best approach. Could you clarify: Can you describe the specific features you envision for the mobile applications? 1. Do you need this for mobile, web, or both? 2. Do you already have UI/UX designs or should we create them? 3. Will there be any third-party API or payment gateway integration? 4. What is your expected timeline for completion? 5. Are there any reference apps or websites you like? Let’s discuss over chat! Regards, Arpit Jaiswal

@Rajoriadares

Hello Client, Greeting of the day!!!! I read your job description. I can do this job with quality product. I am always available for your support. Thanks

@mahig47

Hello I am a senior Flutter mobile app developer having 4+ years of experience in services for "iOS & Android Application" and totally I have experience and expertise of 7+ years in Mobile applications in the various domains in addition to various databases with Creative Designs and best coding techniques from the very beginning until the end. Flutter Ability Set: • Personalized iOS/Android App • App prototyping prototypes • Developing the Flutter App • Including new functions • Widgets for Flutter • UI Flutter • Fixing Flutter UI • Fixing bugs in the Flutter app • Integration of API • Integration with Google Maps • Methods for In-App Payment I will be available full-time for the work and available until you are satisfied with the work. Quality coding, Efficient Solutions for fixing bugs, and available for quick communication during the development period. Can you please share the detailed requirement if available, based on which I can come up with my understanding, queries, and suggestions? Please let me know if you require any additional details from my end. I will be happy to share it with you. Thank you for your time and consideration. With Regards, Nikita Gupta

@webtechso

Hello Sir/Ma’am, I can help build and maintain your cross-platform mobile application with Flutter/React Native and native iOS/Android integration. My relevant experience includes: • Flutter and React Native mobile development • Swift and Kotlin native development • Native SDK integration and platform bridges • REST APIs, Firebase/Supabase and offline data • SQLite/local database and data synchronization • BLE/device integrations and background processing • Charts and mobile data visualization • TestFlight, Play Console and App Store/Google Play deployment I have 12+ years of overall development experience across mobile and web technologies, including Flutter, React Native, Swift and Kotlin. I work independently and personally handle development, ensuring direct communication. I can also share relevant published app examples and discuss my experience with native SDK integrations. Best regards, Pulkit Jalani

@hassans5

Hi, I read your description. You need a cross-platform mobile developer with strong Flutter/React Native experience, native Swift/Kotlin integration, BLE/IoT, offline-first data, background services, HealthKit/Health Connect, and App Store/Google Play deployment experience. I’m comfortable working with React Native, native modules, Firebase/REST APIs, offline storage, push notifications, and production mobile releases. Quick question: Do you already have the BLE device and its native iOS/Android SDKs available, or should I also handle the platform SDK integration? I’m comfortable working with an existing codebase, building native bridges where needed, and keeping the architecture clean and maintainable for future development. Looking forward to your response. Best Regards, Hassan H

@mobiwebsolutions

✋ Hi There!!! ✋ THE PROJECT GOAL: BUILD AND SHIP A RELIABLE CROSS-PLATFORM MOBILE APP FOR IOS AND ANDROID. 1. 4–5 years of Flutter/React Native experience with published mobile apps. 2. Strong Swift and Kotlin skills for native SDK integration and platform bridges. 3. Hands-on BLE, wearables, IoT, and background services implementation. 4. Experienced with offline-first data using SQLite, Room, Drift and synchronization. 5. Skilled with HealthKit, Health Connect, charts, Firebase/Supabase and store releases. Similar projects include BLE-enabled fitness apps, health tracking apps, offline-first mobile solutions, and native SDK integrations with Flutter. <-- Questions --> 1. Which BLE or health-device SDK needs to be integrated? 2. Is there an existing Flutter/React Native codebase or should development start from scratch? Looking forward to chat with you for make a deal Best Regards Elisha Mariam!

@abhishek060

Hi, I have more than 8+ years of experience with Flutter and have worked on production iOS/Android apps, including native integrations through Flutter. I’m comfortable with BLE/wearables, offline-first storage (SQLite/Drift), background services, HealthKit/Health Connect, REST APIs, Firebase, charts, and data synchronization. I also have hands-on experience with TestFlight, Play Console, App Store/Google Play releases and review requirements, including preparing production builds and resolving platform-specific issues. I’m comfortable using AI-assisted tools such as Cursor/Claude Code while maintaining clean, reviewable and production-ready code. If you share the native SDK/BLE device you’re integrating, I can explain the approach I’d use for the Flutter-to-native bridge and data synchronization. Best regards, Abhishek

@NEHABHAT92

With over nine years of experience in the software development industry, I can comfortably say that proficiency is the bedrock of my service. My familiarity with Flutter and React Native spans more than three years, and I've successfully published two apps on both the App Store and Google Play. Additionally, my expertise extends to encompassing native modules and platform bridges using Flutter Platform Channels or React Native Native Modules which perfectly aligns with your project requirements. Beyond these specific requirements, crucially, I'm well versed in dealing with complex tasks. I've had hands-on experience building mobile apps with Bluetooth Low Energy, wearables, IoT or fitness devices. On top of that, data synchronization and utilizing offline-first data methodologies is second nature to me, thanks to my background in SQLite/Room/Drift. Awareness of health-data privacy guidelines including GDPR/HIPAA along with Apple health-data guidelines is another advantage I bring to the table in respect to your project description. Moreover, I understand the intricate workings of mobile applications having experienced App Store & Google Play releases, TestFlight, Play Console and handling app review issues first-hand. Conversely, my abilities extend beyond this realm as well. Being familiar with Firebase, Supabase or REST APIs definitely counts as a plus alongside my knowledge on data visualization for mobile applicat

@adityapandia32

With over 4-5 years of experience in the development industry, I can confidently say that I am the best candidate to handle your cross-platform mobile application project. My expertise lies in Flutter and React Native, which are pivotal to the requirements you have provided for this job. Having successfully published multiple applications on both App Store & Google Play, I am well-versed with native iOS and Android technologies and can proficiently build native modules/platform bridges using Flutter Platform Channels or React Native Native Modules. Health-conscious offerings being your forte, my hands-on experience with Bluetooth Low Energy (BLE) devices, wearables, IoT, or fitness devices will undoubtedly prove advantageous. Additionally, I am well-acquainted with offline-first data storage (SQLite/Room/Drift) and data synchronization along with an understanding of iOS background modes and Android foreground services. Lastly, my awareness of health-data privacy (including GDPR/HIPAA and Apple health-data guidelines) adds another layer of proficiency to my repertoire. Partnering with me would not only ensure a high-quality delivery but also promise a smooth communicative process as I believe in keeping clients well-informed at all stages of the project's completion. Choose me for a comprehensive package of solid skills, rich experience and utmost dedication!

@Web1devloper

The core challenge here is not simply building a cross-platform UI; it is keeping BLE and wearable data reliable across iOS and Android lifecycle restrictions while supporting offline use, background processing, synchronization, and platform-specific health integrations. The native boundary needs to be designed carefully so device communication and OS services remain dependable without making the shared application layer difficult to maintain. I would keep the shared Flutter or React Native layer focused on product workflows, reusable screens, chart components, validation, and clear loading, error, and empty states. Platform-specific functionality would be isolated behind typed interfaces, with Swift and Kotlin bridges handling native SDK behavior, BLE permissions, connection recovery, background modes, and Android foreground-service requirements. Local storage would act as the source for offline interactions, with synchronization designed to handle retries, ordering, duplicate records, and useful conflict behavior rather than assuming continuous connectivity. For health-related data, I would treat permissions, least-privilege access, privacy-sensitive logging, and platform guidelines as part of the implementation—not as release-stage cleanup. Charts should remain readable with large datasets and incomplete time ranges, while the mobile UI stays responsive during device scans, imports, and sync operations. API access, authentication state, and local device state would be separated so failures in one area do not create confusing application-wide behavior. I would also keep release configuration, signing, TestFlight, Play Console builds, and review-sensitive behavior reproducible through clean Git commits and environment-specific configuration. The final code should make native integrations easy to test and extend instead of embedding platform logic throughout the UI. Which native SDKs, BLE device protocols, health data types, and existing API or authentication contracts need to be integrated?

@ektatdsl

Hi, I’m an experienced Flutter/React Native developer with 4–5 years of experience building and shipping cross-platform mobile applications for iOS and Android. I have hands-on experience with native Swift/Kotlin modules, platform bridges, BLE/IoT integrations, offline-first data, SQLite, background services, REST/Firebase/Supabase, and mobile data visualization. I can also handle HealthKit/Health Connect integrations, TestFlight, Play Console, production releases, and app review issues. Question: 1) Which Flutter/RN codebase and BLE/native SDK are you currently using? 2) Do you already have the native SDK documentation and integration credentials? I’m ready to review the existing architecture and start immediately.

@fullstack0407

With over 4 years of experience as a Mobile Android & iOS Developer, I believe I am well-suited for your project. I have successfully developed and published several cross-platform mobile applications using Flutter and React Native for both the App Store and Google Play. My expertise extends to building native modules/platform bridges using Flutter Platform Channels and React Native Native Modules, as well as working with Swift and Kotlin for seamless integration of native SDKs. Beyond just developing mobile apps, I share in your interest in BLE devices, wearables, IoT or fitness devices. My understanding of offline-first data and data synchronization using SQLite/Room/Drift makes me confident in delivering robust applications for you. Additionally, my awareness of health-data privacy, GDPR/HIPAA, and Apple health-data guidelines aligns with the importance you place on these matters.

@saiqasheikhwork5

With over 3 years of substantial experience in not only mobile app development but also using platforms such as Flutter and React Native, I am confident in my ability to build and ship your cross-platform mobile applications. My fluency in Swift, Kotlin, and the native iOS and Android SDKs equips me to work natively while ensuring compatibility across both platforms. Rest assured, I will soon deliver you two smoothly functioning apps published on both the App Store & Google Play. On top of this, I meet several other crucial requirements that your project demands. My familiarity with AI-assisted development tools like Cursor would make me comfortable navigating through possibilities such as GitHub Copilot or Claude Code for increased efficiency. Previously having integrated a native iOS/Android SDK with Flutter or React Native makes me aware of various nuances impacting app performance. Additionally, my affinity with HealthKit/Health Connect could contribute positively towards leveraging health-data privacy and abiding by GDPR/HIPAA and Apple health-data guidelines. My end-to-end approach to development, starting from inclusive idea-validation meetings to a long-term maintenance plan assures that we are always aligned with client objectives, delivering scalable solutions within budgetary constraints that drive real business results. With this being said,

@syedzada421

I have more than 5 years of work experience in Mobile Application development and have hands-on experience in many terms like UI/UX designing, Figma Files, Firebase and Rest APIs integrations I will handle your project easily at a reasonable price, and I am available to start work from now on. Just share the details, and I will start working on it.

@dushyant317

I’m an experienced Flutter/React Native developer with strong Swift/Kotlin expertise, native platform-channel integration, BLE/IoT, offline-first SQLite/Drift, HealthKit/Health Connect, background services, APIs, and App Store/Play Store deployment experience.

@Menaga3777

With over 8 years of experience in full-stack mobile app development, I bring a wealth of knowledge to you. In addition to owning a wide range of technical skills which include, but not limited to; Android, Flutter, Mobile App Development, React Native and Swift, my ability to adapt to new technologies such as Claude Code and Cursor has always ensured my work stands the test of time. My Github portfolio demonstrates not only my depth of skill in software development but also an acute awareness of GDPR/HIPAA and health-data privacy regulations that aligns perfectly with point #11. Alongside developing apps that have successfully been published on both App Store & Google Play (as required), I’ve worked extensively with Bluetooth Low Energy (BLE) devices, wearables, IoT or fitness devices - making me ideally suited to integrate HealthKit / Health Connect as pointed out. Indeed, my experience with data synchronization and offline-first data is vast- something I believe will be an asset to your project. Lastly, I am not just adept at building apps, I've proven myself effective in the management aspect as well by being experienced with App Store & Google Play releases, TestFlight, Play Console and handling app review issues thus giving you a two for one deal.