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I need a straightforward utility app built from the ground up for both iOS and Android. The single must-have feature is seamless data synchronization, so users can start a task on one device and pick it up instantly on another without friction. I’m open to the framework you prefer—Flutter, React Native, or Kotlin Multiplatform—so long as the final binaries meet current App Store and Google Play requirements and performance feels fully native. Clean, well-commented source code and basic UI/UX that follows each platform’s guidelines are essential. Deliverables I expect: • Wireframes or mock-ups for approval • Source code in a private repository • Test builds for both platforms • Final release builds ready for store submission • Brief hand-off documentation outlining build steps and sync logic If you can suggest lightweight user authentication or push notifications that won’t bloat the scope, let me know, but they’re not mandatory for this first release. Looking forward to your approach and timeline.
Project ID: 40511000
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61 freelancers are bidding on average ₹600 INR/hour for this job

Hi there, I have read your project requirements and understand that you need a cross-platform utility application for iOS and Android with reliable data synchronization, allowing users to seamlessly continue their tasks across devices. The focus will be on delivering a clean, responsive, and production-ready app with maintainable code and a user experience that follows platform guidelines. We have experience developing mobile applications with real-time synchronization and can deliver wireframes, test builds, source code, and deployment-ready releases along with clear documentation. A few questions before proceeding: ============================ What type of data or tasks need to be synchronized between devices? Do users need accounts, or should the app support anonymous usage initially? Would you like cloud-based sync with offline support as well? Do you already have wireframes, or should we create the UI from scratch? Best Regards, Srashtasoft Team
₹575 INR in 40 days
7.1
7.1

Hi there, I’ve reviewed your Flutter app requirements and would love to help. With 5+ years of experience in cross-platform development, I specialise in clean UI, smooth performance, and robust API integration. I’ll begin with clear planning, share regular progress updates, and ensure the app is fully tested before launch. Let’s connect to discuss your vision — I’m ready to get started! Best, Bhargav Flutter Developer | Android & iOS Expert
₹575 INR in 40 days
7.0
7.0

I’d be glad to build your cross‑platform utility app for iOS and Android with the must‑have feature of seamless data synchronization. My focus will be on clean, well‑commented code, native‑like performance, and UI/UX aligned with platform guidelines. Deliverables will include: Wireframes/mock‑ups for approval Private repository source code Test builds for both platforms Final release builds ready for submission Handoff documentation with build steps and sync logic I’m flexible with Flutter, React Native, or Kotlin Multiplatform, choosing the best fit for performance and compliance. Optional features like lightweight authentication or push notifications can be added without scope bloat. Looking forward to sharing a clear timeline and collaborating on this project.
₹575 INR in 40 days
7.4
7.4

As a highly skilled and experienced Full Stack Developer, I am confident that I can not only meet but exceed your expectations for this cross-platform utility app project. My expertise in React Native, along with my in-depth understanding of modern frameworks like Flutter and Kotlin Multiplatform, makes me versatile enough to utilize the best-fit technology. Drawing from my 5+ years of real-world experience, I guarantee you a high-quality application that fully syncs user data across devices without any hassle. And of course, adhering to platform-specific guidelines is second nature to me. My proficiency scales across both frontend and backend development, which allows me to create well-rounded applications optimized for performance and user experience. If requested, I can even suggest lightweight user authentication or push notification solutions that won't unnecessarily bloat the scope of your project. In conclusion, working with me means receiving personalized attention, timely delivery, and unbeatable communication. Turning ideas into reality through code is not just what I do; it is my passion. Let's collaborate on this project to build something amazing- an app that simplifies tasks for users while amplifying your brand's success!
₹400 INR in 40 days
5.1
5.1

Hi! Your focus on seamless sync between devices is the key challenge here—most utility apps break at that step. I’ve shipped production-ready apps in Flutter and React Native that clear App Store and Play Store checks (recent one: Wish App, with live sync and cloud login). For yours, I’d suggest Flutter—one codebase, native feel on both platforms, and quick to roll out updates. Sync can be handled by a simple Node.js back end with real-time updates if needed. Wireframes come first so you can sign off on flow before I code. Do you want the sync to work instantly even if a device is briefly offline, or is near-real-time enough? That shapes the whole backend logic. Happy to send a free outline with suggested modules and a wireframe sample. You can check similar delivery style at work.techindika.com. — Pradeep
₹575 INR in 40 days
4.5
4.5

I need a straightforward utility app built from the ground up for both iOS and Android. The single must-have feature is seamless data synchronization, so users can start a task on one device and pick it up instantly on another without friction. I’m open to the framework you prefer—Flutter, React Native, or Kotlin Multiplatform—so long as the final binaries meet current App Store and Google Play requirements and performance feels fully native. Clean, well-commented source code and basic UI/UX that follows each platform’s guidelines are essential. Deliverables I expect: • Wireframes or mock-ups for approval • Source code in a private repository • Test builds for both platforms • Final release builds ready for store submission • Brief hand-off documentation outlining build steps and sync logic If you can suggest lightweight user authentication or push notifications that won’t bloat the scope, let me know, but they’re not mandatory for this first release. Looking forward to your approach and timeline.
₹575 INR in 40 days
4.4
4.4

Hello, I have read your Complete proposal your Need a Experienced Flutter developer for cross platform utility app. I have more than 3 years of work experience in Mobile application developemnt have a hand-on expeirence in Many terms like Figma to Flutter, Firebase, Google maps and Rest APIs integrations I am Confident that will handle your task in a reasonable price and time and I am available to start working on it Let's chat to Proceed
₹400 INR in 40 days
3.7
3.7

As a seasoned Full-Stack Web & Mobile App Developer, I have a proven track record of designing and developing successful applications that cater to a variety of industries. My established skills in Android, iOS development, and proficiency in Flutter create an ideal foundation for your Cross-Platform Utility App Development project. The seamless data synchronization feature you desire poses no challenge to me. I've consistently implemented synchronizing functionalities across various devices with ease, employing optimized solutions to guarantee an effortless user experience. It’s worthy to note that I can also provide lightweight user authentication and push notification options that won’t bloat the project scope. With 5+ years of experience, Ibrar survived numerous periods of technology disruption, making adaptation and staying up-to-date on trends a core strength. You can rely on my ability to pick frameworks based on your specifications, ensure all binaries are compliant with the strictest app store requirements and maintain a fully-native performance across all devices. I look forward to partnering with you, delivering high-quality source codes, test builds, final release versions, and comprehensive documentation for an even smoother handoff process. Let's collaborate
₹575 INR in 40 days
3.6
3.6

As a seasoned Full Stack Developer specializing in mobile app development, I bring over 5+ years of comprehensive experience to the table. My fluency in platforms like Android, Flutter, and iOS Development means I am able to effectively meet your cross-platform utility app needs while ensuring seamless data synchronization between devices. I am adept at translating ideas into practical, scalable and reliable digital solutions. Not only can I provide you with wireframes or mock-ups for approval before we even start coding, but my source code repositories are always clean and well-commented - ensuring that they're easily understood by you or other developers working on the project later. One of the things that makes me truly invaluable for your project is my commitment to building long-term relationships. Right from the onset, I work closely with clients to understand their goals, suggest improvements and communicate updates transparently throughout the duration of the project. Should you choose me to be part of this development process, I promise a focused approach that promotes frequent iteration based on your feedback – transforming your vision for this utility app into a reality that will scale your business effectively and built for success.
₹575 INR in 40 days
3.5
3.5

Hi, I can build your cross-platform utility app for iOS and Android with a clean, native-feeling UI and reliable real-time data synchronization as the core feature. I recommend Flutter for this project to ensure a single codebase, fast performance, and consistent UI across both platforms while still meeting App Store and Google Play standards. The sync layer will be designed using a lightweight backend (Firebase or custom REST + WebSocket option), allowing users to seamlessly continue tasks across devices without manual refresh or conflict issues. My approach: • Start with simple wireframes for approval (UX-first, minimal friction flow) • Build a scalable sync architecture (offline-first + real-time updates) • Implement clean, modular Flutter code with platform-aligned UI components • Add optional lightweight auth (Firebase Auth or email-based login) if needed later • Provide test builds early for feedback on both iOS and Android Deliverables: • Approved wireframes • Full Flutter source code in a private repo • iOS + Android test builds • Production-ready release builds • Clear handover documentation covering architecture, sync logic, and deployment steps The focus will be on speed, reliability, and a frictionless user experience so the app feels instant across devices. I can start immediately and share an initial structure within a few days for early validation. Best regards, Mukesh
₹575 INR in 40 days
2.8
2.8

Hi there, You’re absolutely in the RIGHT PLACE. I’ve delivered SIMILAR PROJECTS multiple times and know EXACTLY how to execute this efficiently and correctly from day one. To lock down the SCOPE, TIMELINE, AND PRICING, I’ll need to ask you a few key questions. Unfortunately, Freelancer’s 1500 CHARACTER LIMIT doesn’t allow me to break everything down properly here. Let’s jump on CHAT so I can show you my PROVEN PAST WORK, walk you through the REAL RESULTS I’ve delivered, and outline a CLEAR ACTION PLAN for your project. You’ll immediately see why my approach is DIFFERENT and EFFECTIVE. If you’re serious about getting this done RIGHT, I’m ready to move forward. Looking forward to CONNECTING and WINNING TOGETHER. Cheers, Mayank Sahu
₹575 INR in 40 days
2.9
2.9

With the complexity of the project you've outlined, I believe my expertise and more than 6 years of experience in web and mobile development make me a perfect candidate for the job. Having worked on a variety of projects, I am well-versed in a range of technologies relevant to this particular task, including being proficient in Android development and React Native. I have experience building utility apps with native-like performance, ensuring they meet all App Store and Google Play requirements. Furthermore, my portfolio speaks for itself in terms of clean, well-commented source code and adherence to platform guidelines for UI/UX. My commitment to high-quality deliverables, including providing wireframes or mock-ups for approval, maintaining a private repository filled with clear source codes, delivering test builds for all platforms, submitting optimized final release builds and comprehensive hand-off documentation sets me apart. Lastly, my skill set extends beyond just app development—I can offer you lightweight user authentication or push notifications without bloating the project's scope. Through efficient use of industry standard AWS services like EC2, Lambda, S3 to mention a few; I ensure solid back-end functionality. My focus has always been about getting a deep understanding of your needs and providing full-cycle product development from design to deployment with real-time maintenance and support afterwards. I am excited to discuss this project further with you.
₹745 INR in 40 days
2.4
2.4

You need a cross-platform utility app with seamless real-time sync across iOS and Android — clean scope. We'd go with React Native + Firebase Firestore for this: conflict-free real-time sync, instant offline-to-online reconciliation, and identical UX across both platforms. App Store and Play Store guidelines are our default baseline. We've shipped similar cross-platform apps with sync-first architecture before — the key is getting the conflict resolution and state persistence right from day one. Clean, well-commented source code included. Ping me to discuss the specific data types you need synced.
₹600 INR in 40 days
2.2
2.2

Your core requirement is a utility app that feels native on both iOS and Android while keeping data perfectly in sync across devices, so users can switch devices mid-task without losing context. I’d build this as a Flutter application with a cloud-backed sync layer (Firebase or Supabase, depending on your preference). That gives you one clean codebase, native-level performance, and reliable real-time synchronization without adding unnecessary complexity. The process would start with wireframes and user flows for approval, followed by UI implementation aligned with Apple and Google design guidelines, sync architecture, testing, and deployment-ready builds. I’ll also maintain a private repository, provide documented source code, and include a concise handoff covering build steps, deployment, and sync logic. For authentication, a lightweight email magic-link or Google/Apple sign-in approach works well without expanding scope. Push notifications can also be added later using the same backend foundation. A typical timeline for an MVP with cross-device sync, testing, documentation, and store-ready builds would be around 4–6 weeks, depending on the exact task workflow and data model. If this fits what you’re looking for, I’d be glad to discuss the sync requirements and map out the most efficient architecture before development starts.
₹400 INR in 40 days
2.0
2.0

I can build a lightweight cross-platform iOS and Android utility app with seamless real-time data synchronization, clean native-feeling UI, secure cloud-backed architecture, and complete delivery from wireframes to store-ready builds, including source code, documentation, and deployment support.
₹575 INR in 40 days
2.2
2.2

Hi, For this type of application, I would recommend Flutter as it provides near-native performance, a single maintainable codebase, and smooth deployment to both the App Store and Google Play. The project will include wireframes for approval, clean and well-documented source code, test builds throughout development, release-ready binaries, and concise hand-off documentation covering build procedures and synchronization architecture. A few questions: What type of data or tasks will users be synchronizing between devices? Should synchronization occur instantly in real time or is near real-time syncing acceptable? Will users require individual accounts, or should multiple devices share the same workspace/data set? Portfolio: https://www.freelancer.in/u/Rupal878 Looking forward to hearing back from you and discussing this in the chat. Rupal Saini
₹575 INR in 40 days
2.0
2.0

As an experienced full-stack software engineer with a passion for scalable mobile applications, I believe I'm the perfect fit to bring your cross-platform utility app to life. My proficiency in Flutter, React Native, and my dedication to clean coding ensures that the final binaries will meet both App Store and Google Play requirements and provide a seamless native experience on iOS and Android platforms. One of the major highlights of your project is the need for seamless data synchronization. This challenge perfectly aligns with my expertise as I have hands-on experience building such functionalities using Flutter and Firebase. My thorough understanding of various databases, including MySQL and MongoDB, also equips me with database optimization skills key for efficient information management across your app on different devices. Beyond just delivering a state-of-the-art utility app meeting your requirements, I pride myself on ensuring client satisfaction by providing comprehensive handoff documentation which outlines build steps and sync logic. I am readily available to parse through any query you may have as we work together to realize your project. Let's discuss how our combined vision can meet your timeline and bring great value to your users through your new utility app!
₹400 INR in 40 days
1.0
1.0

Hi, I would be happy to help develop your mobile application with a clean, modern UI, smooth performance, and a scalable architecture. we are an IT company in central India with having 6+ years of experience in React Native, Flutter,Node.js,PHP, Python, API integrations, Api Development and Android/iOS app development, we have successfully delivered high-quality mobile applications for various business requirements. What you can expect: • Wireframes or mock-ups for approval • Source code in a private repository • Test builds for both platforms • Final release builds ready for store submission • Brief hand-off documentation outlining build steps and sync logic I can start immediately and would like to discuss your project requirements, features, timeline, and goals in detail. Looking forward to working with you. Best Regards, Prachi Agrawal Webix Infotech
₹575 INR in 40 days
0.4
0.4

Hi, I understand the main priority is seamless data synchronization, allowing users to switch devices and continue their work instantly. I’ll build a lightweight cross-platform app using Flutter or React Native with reliable cloud sync, clean UI, and smooth performance on both iOS and Android. I’ll provide wireframes, clean source code, test builds, release-ready apps, and clear documentation covering setup and sync functionality. Please share the details and I'll start working right away.
₹400 INR in 40 days
0.8
0.8

Hello, I can build your cross-platform utility app for iOS and Android with seamless real-time data synchronization as the core feature. I recommend Flutter with Firebase/Supabase for fast development, native-like performance, and reliable sync across devices while keeping the architecture lightweight and scalable. The project will include wireframes, clean UI following platform guidelines, secure cloud synchronization, well-documented source code, test builds, and store-ready release versions. If needed, I can also implement lightweight authentication and push notifications without adding unnecessary complexity to the MVP. Deliverables include complete source code in a private repository, Android & iOS test builds, deployment-ready releases, and handover documentation covering build steps and synchronization logic. Best regards, Plexikart
₹400 INR in 40 days
0.0
0.0

Chennai, India
Member since Jun 13, 2026
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