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I’m building a cross-platform mobile app that helps users stay organized and in sync across iOS and Android. The core of the project is a productivity tool, so clean UX, quick load times, and rock-solid data handling matter as much as the code itself. Key features I must see in the first release: • Task management – users can create, edit, prioritise, and mark tasks complete. • Calendar integration – events flow in and out of the native calendar APIs with two-way sync. • User collaboration – real-time sharing of tasks and deadlines between team members. I’m happy for you to work with React Native, Flutter, or another proven cross-platform framework; just outline your preferred stack and why you like it. Clean, well-commented code stored in a private Git repo is a must, and I’d like a TestFlight / Google Play internal test build at each milestone so I can review progress on real devices. Acceptance criteria for hand-off: 1. All three feature sets function smoothly on current iOS and Android versions. 2. No critical bugs or crashes during a week-long beta. 3. Complete source code, README with setup steps, and build scripts included. If you have shipped similar productivity or collaboration apps, please mention them—seeing thoughtful UI and polished interactions helps me decide quickly.
Project ID: 40452155
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23 freelancers are bidding on average ₹7,348 INR for this job

Hello, I have 10+ years of experience in cross-platform mobile app development using React Native, Flutter, Node.js, and Laravel. I have developed productivity, collaboration, and real-time synchronization applications focused on performance, scalability, and polished user experiences. Your app requirements are well-structured, and I can build a clean, responsive productivity platform with: • Task creation, prioritization, editing, and completion tracking • Two-way native calendar synchronization for iOS & Android • Real-time collaboration and shared task management • Secure backend architecture with reliable data syncing • Smooth UI/UX optimized for speed and usability • Private Git repository with clean, maintainable code For this project, I would recommend React Native with a scalable Node.js backend for efficient cross-platform performance and faster iteration across iOS and Android. I can provide milestone-based TestFlight and Google Play internal builds for continuous testing and feedback throughout development. You will receive complete source code, setup documentation, and deployment/build scripts with a stable production-ready application. I’d be happy to discuss the architecture, collaboration workflows, and project timeline in detail. Best regards
₹1,050 INR in 7 days
7.0
7.0

Dear Sir/Madam, I am Kishore Patidar, a professional Mobile App and Python Developer with strong experience in building scalable, production-ready mobile applications and backend systems. I specialize in Flutter (cross-platform), Android (Java/Kotlin), Firebase, Supabase, Node.js, FastAPI, and Django. I have successfully delivered multiple live apps on both Google Play Store and Apple App Store, including fintech, healthcare, education, social networking, and on-demand service platforms. My expertise includes: • Cross-platform mobile app development (Flutter) • Backend API development (Node.js, FastAPI, Django) • Payment Gateway integration (PhonePe, Razorpay, Stripe) • Real-time chat & notification systems • Admin panel & dashboard development • App deployment & store publishing • Secure authentication & role-based systems I focus on clean architecture, scalable backend design, optimized performance, and smooth user experience. From idea to deployment, I can handle complete end-to-end development. I would be happy to discuss your project requirements and deliver a reliable, high-quality solution within timeline. Looking forward to working with you. Best Regards, Kishore Patidar Mobile App / Python Developer
₹1,000 INR in 1 day
4.8
4.8

Hii I have with over 5+ experience and i will deliver this product within 10 days and 2 days for production deployment let’s connect Thanks
₹1,050 INR in 7 days
3.3
3.3

With a deep-rooted dedication to providing mobile solutions for clients, my team at GSINFOTECHH OPC Pvt. Ltd. is well-positioned to turn your cross-platform productivity app idea into a polished reality. We've successfully handled numerous projects involving Android and iOS Development, and we're proficient in both React Native and Flutter, minimizing platform limitations while ensuring the app functions impressively on all supported platforms. In line with the project description's critical emphasis on UX, we'd adopt clean, well-commented code practices that are maintainable and scalable — with documented setup steps so that you can easily take full control post-deployment. Be reassured of smooth progress monitoring as I’ll always provide a build and detailed update, including using TestFlight and Google Play internal test builds at each milestone for real-device testing. Collaboration is also one of our strong suits; we create digital solutions that enhance users' teamwork and efficient task management while collaborating remotely. Indeed, our profile boasts shipped productivity-driven apps with thoughtful UI/UX designs, polished interactions, and robust functionalities that align with the features you require for your app. Secure a future-ready technology solution:utf8
₹600 INR in 7 days
0.0
0.0

Hi, I understand that building a productivity app like this requires more than just functional features—it demands smooth UX, reliable real-time collaboration, fast performance, and stable cross-platform delivery. The biggest challenge is creating a scalable app that handles task management, calendar synchronization, and team collaboration seamlessly across both iOS and Android, and that’s exactly where I can help. I can develop this using a proven cross-platform framework like Flutter or React Native, depending on your preferred balance of performance, scalability, and development speed. My focus will be on delivering a polished, intuitive user experience with clean architecture, secure real-time data syncing, native calendar API integration, and efficient collaboration tools. I also prioritize maintainable, well-documented code, private Git workflow, and milestone-based TestFlight/Google Play builds for transparent progress tracking. With experience in building modern mobile applications, I understand the importance of combining thoughtful UI/UX with strong backend structure to ensure reliability, speed, and smooth handoff. I’d be happy to discuss my preferred tech stack, similar projects, and how I’d approach building this product successfully. Message me now so we can discuss your app vision further and build a polished productivity platform that delivers real value across both iOS and Android.
₹600 INR in 1 day
0.0
0.0

Hello I hope you are doing well I have read your Complete proposal You need a Experienced Flutter developer for Productivity application I have more than 3 years of work experience in Mobile application development have a hand-on experience in many terms like Figma to Flutter, Firebase, Google maps and Rest APIs integrations I am confident that I'll handle your task in a reasonable price and time and I am availble to start working on it Let's chat to Proceed
₹600 INR in 7 days
0.0
0.0

A highly motivated Fresher and self-taught Flutter Developer and UI/UX Designer with a passion for building seamless, high-performance mobile applications. Skilled in creating visually engaging designs in Figma and translating them into functional, responsive code. Committed to continuous learning and leveraging modern state management, Firebase, and REST APIs to deliver quality digital experiences. Please check my profile. Thank You!!
₹1,050 INR in 4 days
0.0
0.0

Hi! I'm Nirnay, a Flutter developer with 3+ years experience delivering cross-platform apps to the Play Store and App Store. For your productivity app I'll use Flutter (my preferred stack) for: ✅ Task management – create, edit, prioritise & complete tasks ✅ Calendar integration with native APIs (two-way sync) ✅ Real-time user collaboration with shared tasks & deadlines ✅ Clean architecture, well-commented code in private Git repo ✅ TestFlight & Play Store internal test builds at each milestone I specialise in state management (GetX/BLoC/Provider) and API integration using Dio. I've built and shipped production apps (e.g. Choira Studio Booking App, Samay appointment booking). Flutter is my primary stack and I can justify my choice during our discussion. Available to start immediately. Let's connect!
₹1,200 INR in 10 days
0.0
0.0

Hello, Your project is a great match for my experience. I have already developed a similar productivity and collaboration app with task management, calendar sync, and real-time shared updates, so I can help you complete this project smoothly and efficiently. I recommend Flutter because it delivers excellent performance on both iOS and Android from a single codebase while keeping the UI fast, clean, and scalable. I can build: • Task management with priorities, reminders, and status tracking • Two-way native calendar integration • Real-time collaboration and shared task updates • Clean, maintainable, and well-commented code • Private Git repository with milestone-based progress updates • TestFlight & Google Play internal builds for every milestone I focus strongly on UX, performance optimization, and stable real-time synchronization to ensure the app feels responsive and reliable on all devices. For hand-off, I will provide: • Complete source code • README with setup instructions • Build/deployment scripts • Support during beta testing and bug fixing I’d be happy to discuss your workflow, preferred architecture, and timeline in detail. Looking forward to helping you successfully launch this app.
₹1,050 INR in 7 days
0.1
0.1

Hi, I’m a Flutter expert with 8+ years of experience building high-performance apps. I’ve developed apps like billing systems, e-commerce platforms, and real-time apps already live on Play Store. ✔ Smooth UI/UX ✔ API integration ✔ Scalable architecture I can start immediately and deliver quality work. Let’s discuss. Thanks.
₹1,050 INR in 7 days
0.0
0.0

Srinagar, India
Member since Aug 5, 2025
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