
Lukket
Slået op
Betales ved levering
I need an end-to-end build of a BAND-style platform that runs smoothly on the web as well as native iOS and Android. At its heart the system must let members stay organized and in touch from any device without feature gaps between the browser and the mobile apps. Core features • Group communication – real-time chat and threaded posts that sync instantly across all platforms • Event scheduling – shared calendars, RSVP tracking, and reminders • File sharing – documents, photos, and videos stored securely and searchable • Polls – quick voting that shows live results • Alerts and notifications – push messages the moment something happens, with an option for members to set a “status of receive” so they can control how and when they’re pinged • Status updates – short check-ins or announcements visible to the whole group Scope of work 1. Product design: responsive web UI plus consistent iOS and Android layouts, light and dark modes. 2. Back-end: single code-base or microservices that power messaging, calendar, file storage, and notification queues. 3. Native apps: submission-ready builds for the App Store and Google Play, fully tested on current OS versions. 4. Admin console: manage groups, permissions, and analytics from a browser. 5. Deployment & hand-off: staging environment, production launch, and documentation so my team can operate the system after delivery. Acceptance criteria • One login works everywhere and data stays in sync. • Push alerts reach devices within five seconds of an event being triggered. • Calendar invites add directly to native device calendars on iOS and Android. • File uploads up to the size limit we define complete without error 99.9 % of the time. • Source code, build scripts, and API documentation are handed over at project close. Tell me how you’d approach architecture, which frameworks you recommend (e.g., React Native, Flutter, Firebase, Node, or others), and a timeline that covers design, development, testing, and deployment.
Projekt-ID: 40243106
173 forslag
Projekt på afstand
Aktiv 11 dage siden
Fastsæt dit budget og din tidsramme
Bliv betalt for dit arbejde
Oprids dit forslag
Det er gratis at skrive sig op og byde på jobs
173 freelancere byder i gennemsnit $2.597 USD på dette job

Hello, Building a BAND-style cross-platform communication system requires strong real-time architecture and disciplined product design. We can deliver a unified platform that runs seamlessly on web, iOS, and Android without feature gaps. Architecture Approach We recommend a single backend using Node.js (NestJS) with microservice-ready structure, WebSockets for real-time messaging, and a message queue (Redis/Kafka) for notifications and background jobs. For file storage, AWS S3 with CDN delivery and searchable metadata indexing. Authentication via JWT/OAuth with unified login across platforms. Core Modules Real-time chat + threaded posts Calendar with RSVP + device calendar sync Secure file uploads with retry logic Polls with live results Granular notification preference system Admin console with analytics and role control Before proceeding: Do you expect this to support thousands or millions of concurrent users initially? Is end-to-end encryption required for chat? Do you need enterprise SSO options? Rated Top 1% on Freelancer.com with a 100% job success rate and the highest repeat hire rate, we ensure your platform is both visually refined and architected for long-term scalability. Cost and timeline are placeholders and will be finalized after deeper technical scoping. Thank you Jyoti from CVInfotech
$2.500 USD på 25 dage
9,5
9,5

***** End-to-End BAND-Style Cross-Platform Communication Platform **** Core modules—chat, events, file storage, polls, notifications, and status updates—will run on a centralized cloud infrastructure (AWS or Firebase) with real-time data sync and <5s push delivery via FCM/APNs. • User registration & unified login • Group creation & management • Real-time chat (1:1 and group) • Threaded posts & discussions • Shared calendar & event scheduling • RSVP tracking • Push notifications • Notification preference controls • File upload & secure storage • Media gallery (photos & videos) • Document search • Polls with live results • Status updates / announcements • Admin dashboard • Role & permission management Let’s chat… Thanks
$1.840 USD på 22 dage
9,8
9,8

With over 10 years of experience in web and mobile development, I understand the importance of building a seamless BAND-style platform that caters to your emergency community's needs. Your project requires real-time communication, event scheduling, file sharing, polls, alerts, status updates, and more, all synchronized across web and mobile platforms without any feature gaps. In the realm of community-focused solutions, I have successfully delivered tailored products in the past that drive results and enhance user experiences. My expertise in backend development, native app creation, and user-centric design align perfectly with your project requirements. If you choose to work with me, I will approach the architecture using a combination of React Native for the native apps, Node.js for the backend, and Firebase for real-time synchronization. This setup ensures a smooth user experience, efficient data management, and quick deployment. My proposed timeline covers design, development, testing, and deployment within the specified budget and timeframe. I am excited about the opportunity to collaborate on this project and bring your vision to life. Feel free to reach out to discuss further details and take the next steps towards building your ideal emergency community app and website suite.
$2.400 USD på 30 dage
9,1
9,1

Hi there, I understand you're looking for a comprehensive BAND-style platform that ensures seamless communication and organization across web and mobile devices. Your core features, including real-time chat, event scheduling, and file sharing, are essential for fostering a connected community. To approach this project, I propose using React Native for the mobile applications to ensure a consistent user experience across iOS and Android. For the back-end, Node.js with a microservices architecture will provide the scalability and efficiency needed for real-time functionalities. I will also incorporate Firebase for notifications and data synchronization. The project will begin with product design, focusing on responsive UI and consistent layouts. Development will follow, ensuring all features are integrated and thoroughly tested. Finally, I will prepare the deployment and hand-off documentation to ensure your team can manage the platform effectively. I estimate this project will take approximately 300 hours to complete, covering all phases from design to deployment. I look forward to discussing this further and helping you bring your vision to life. Best regards, Burhan Ahmad TechPlus
$3.000 USD på 38 dage
8,3
8,3

⭐⭐⭐⭐⭐ Build a BAND-Style Platform for Web and Mobile with Seamless Features ❇️ Hi My Friend, I hope you're doing well. I've reviewed your project requirements and see you're looking for an end-to-end build of a BAND-style platform. You don't need to look any further; Zohaib is here to help you! My team has successfully completed 50+ similar projects for mobile and web applications. I will ensure that your platform allows members to stay organized and connected across all devices without any gaps in features. ➡️ Why Me? I can easily build your BAND-style platform as I have 5 years of experience in web and mobile application development. My expertise includes UI/UX design, real-time communication, and database management. I also have a strong grip on frameworks like React Native and Node.js, which will help me create a robust and efficient system. ➡️ Let's have a quick chat to discuss your project in detail and let me show you samples of my previous work. I'm excited to explore this opportunity with you! ➡️ Skills & Experience: ✅ Web Development ✅ Mobile App Development ✅ UI/UX Design ✅ Real-time Chat Integration ✅ Event Scheduling Systems ✅ File Sharing Solutions ✅ Polling Features ✅ Push Notifications ✅ Database Management ✅ API Development ✅ Quality Assurance Testing ✅ Documentation Waiting for your response! Best Regards, Zohaib
$1.800 USD på 2 dage
7,7
7,7

Hello I’m excited about your community website project and understand exactly what you’re aiming for and I’ll focus on solving that from day one ✨ ➤ WHAT I’LL DELIVER ✅ Tailored solution aligned precisely with your requirements ✅ Clean, modern & conversion-focused execution ✅ Fully responsive (mobile, tablet, desktop) ✅ Fast performance + SEO-ready structure ✅ Easy-to-manage setup with smooth workflow ✅ Free demo/sample based on your project title ✅ Unlimited revisions ✅ 100% money-back guarantee ➤ WHY ME ✅ Proven experience solving similar client pain points ✅ Strong focus on quality, usability & scalability ✅ Clear communication with regular updates ✅ Reliable delivery with long-term support mindset Let’s turn your idea into a powerful, results-driven solution ? Message me now and I’ll start with a free demo right away!
$1.500 USD på 3 dage
7,6
7,6

As a seasoned tech veteran with over 15 years in the industry, I bring to the table the comprehensive knowledge and insight your project requires. My team at Mexin Web Infotech doesn't just write code, we architect resilient digital ecosystems that emphasize scalability, security, and smart design—a perfect fit for your aspiration to build an emergency community app and website suite. Our proficiency spans across several indispensable tools to guarantee outstanding outcomes. Drawing on frameworks like React Native and Flutter, we will ensure seamless integration between all platforms while leveraging Firebase’s power for backend services. Further, our adoption of Node.js for efficient data handling will streamline communications, calendaring, file storage, and notification processes—providing users with the kind of instantaneous responsiveness they need in a crisis. From a timeline standpoint—from design to development, all through testing and deployment—my team maintains an agile approach that promotes both quality and efficiency. Rest assured; we'll check all the boxes in your acceptance criteria. Upon project completion, you can expect more than just handover of source code; you'll also receive meticulous documentation and unwavering support for a smooth handoff to your team.
$2.250 USD på 7 dage
7,4
7,4

Hello, I will develop your COMMUNITY MOBILE APPLICATION for Android and IOS both platforms with Web admin panel. I am Tulsiram. I have 10 years of experience working as Native and Crossplatform mobile application developer. I am understood your requirements. I am glad if we are working together. If you interested then let's connect. I will provide you Daily updates ,source code after development completed, 1 Year maintenance Support in following Steps: I will available daily 10-12 hours in Working days for you. I will provide you regular updates according to which modules we will decided. After approval each module by you then i will provide your complete source code of your project and will shift on your Domain. Thanks
$1.500 USD på 22 dage
6,6
6,6

Hello! As per your project post, you’re looking to build a BAND style community platform with fully integrated web and native mobile apps that enable members to communicate, organize events, share files, and stay connected seamlessly across devices. The goal is to provide a real time, feature consistent, and scalable platform that supports community engagement with a polished user experience. My focus will be on developing a unified platform featuring: real time chat and threaded discussions synced across all devices, shared calendars with RSVP tracking and reminders, secure file sharing with search functionality, polls with live results, customizable push notifications and alerts, and an admin console for managing groups, permissions, and analytics. The platform will ensure consistent functionality across web, iOS, and Android with scalable backend architecture and secure data handling. I specialize in building real time community and collaboration platforms with cross platform synchronization, cloud native architecture, and scalable backend services, with focus on performance, reliability, and intuitive user experience. My focus will be on delivering a production ready system that strengthens engagement, simplifies administration, and scales with your community. I am confident I can deliver a secure, scalable, and fully synchronized community platform tailored to your vision. Best regards, Nikita Gupta.
$1.500 USD på 45 dage
6,4
6,4

Hello, I hope you are doing well. I understand that you are looking to build a EMERGENCY AND COMMUNITY MOBILE APPLICATION and I would be happy to help. I have extensive experience in designing and developing Application 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.
$1.500 USD på 15 dage
7,2
7,2

As an experienced software developer, I understand the urgent need for reliable emergency communication tools in our society today. With a strong background in API and backend development using the likes of PHP, Node.js, and React Native, I am confident in my ability to build you an end-to-end emergency community app: a platform your team can trust. At SoftwareLinkers, we approach architecture with scalability and long-term usage in mind. I propose utilizing frameworks like React Native or Flutter to ensure a consistent experience across web and mobile platforms. Since you'll require real-time updates for chat posts and event scheduling among other critical features, I recommend using scalable microservices powered by Node.js that can handle this efficiently. For dependable document storage, searching, and retrieval, we can integrate secure file-sharing systems like Firebase. In terms of timeline, I believe in delivering on time without jeopardizing quality. Therefore, starting from design, development, testing to deployment, rest assured every phase will be given the attention it deserves. Post-delivery is not an afterthought for me; documentation and system hand-off are essential parts of the process that guarantees smooth maintenance onward.
$2.000 USD på 32 dage
6,4
6,4

Hello I will be able to help you. Please message me so that we will have detail technical discussion. I have 9+ years of combined experience in Mobile Application development, Website development, Desktop application development, 3rd party Artificial Intelligence api, AR/ VR, Chatbot, Blockchain- Cryptocurrency, CRM & ERP, Game Development and any other Software development. I am having expertise in Native on Android Java, kotlin and IOS Swift, and For Hybrid Cross platform on Flutter Dart & React- Native, and for web and backend on react js and node js, Python Django , java spring boot and php CodeIgniter mvc. Please consider me and initiate a chat for further detailed discussion. Regards, Anju
$1.800 USD på 30 dage
6,6
6,6

Hi there, Good evening I am Talha. I have read you project details i saw you need help with Android, PHP, Web Development, Backend Development, iOS Development, React Native, iPhone, API Development, Node.js and Mobile App Development I am excited to submit my proposal for your project, which focuses on a comprehensive project plan. To begin, we will thoroughly understand your project's objectives and requirements, ensuring alignment on scope and goals. We will provide a clear and realistic project timeline with manageable milestones to ensure timely completion Please note that the initial bid is an estimate, and the final quote will be provided after a thorough discussion of the project requirements or upon reviewing any detailed documentation you can share. Could you please share any available detailed documentation? I'm also open to further discussions to explore specific aspects of the project. Thanks Regards. Talha Ramzan
$1.500 USD på 12 dage
5,9
5,9

This project calls for a unified experience across web and mobile, so I’d build a shared backend using Node.js with microservices to handle messaging, calendar, file storage, and notifications separately. For the front end, React for web combined with React Native for iOS and Android lets us share UI components and maintain consistent design and behavior. Using Firebase for real-time chat and push notifications would help meet your five-second alert goal. For file storage, I’d use a cloud service like AWS S3 or Google Cloud Storage with resumable uploads to hit that 99.9% success rate. Calendar invites can integrate via native device APIs accessed through React Native modules to add events directly. The design phase would prioritize responsive UI and accessibility with light/dark mode in parallel with back-end API development. Native apps would be tested on current OS versions during a later stage before deployment. Admin console would be a React web app talking to the same backend. A typical timeline would be 4 weeks for design, 8 weeks development including testing, and 2 weeks for launch and documentation. Does your team have any preferences on cloud providers or restrictions on third-party services? Also, would you want offline access or data caching built in, given this is an emergency/community app? Ready to start architecting this end-to-end system and deliver a smooth, synced experience across all platforms.
$1.500 USD på 7 dage
5,4
5,4

Hi, I can build your BAND-style platform with a unified backend (Node/Firebase or scalable microservices) powering real-time chat, events, polls, file storage, and push notifications—delivered across responsive web and native iOS/Android with full sync and dark/light modes. I’ll structure it with clean architecture, sub-5s notification delivery, calendar integration, robust file handling, and provide complete source code, API docs, and deployment setup for a smooth production launch. Lets discuss on chat. Regards Abhishek
$2.250 USD på 7 dage
5,8
5,8

Hi, I’ve built cross-platform collaboration apps with feature parity between web and mobile, so I understand how critical real-time sync and performance are for a BAND-style platform. My approach would be to use a modern full-stack setup: React for web, Flutter for iOS/Android for a single codebase with consistent UI/UX, and Node.js with WebSocket-driven services for messaging and live updates. Firebase or AWS Amplify could handle authentication, push notifications, and cloud storage securely, while a relational DB ensures calendar, poll, and file metadata integrity. I’d start with UX/UI wireframes covering both light and dark modes, then move into backend and front-end development concurrently. Native app builds would be integrated into CI/CD pipelines, and the admin console would be web-first with real-time analytics dashboards. Testing includes automated unit and integration tests, followed by staged beta deployments to iOS TestFlight, Android internal test tracks, and web staging. A typical timeline: • 2–3 weeks: product design and wireframes • 6–8 weeks: backend and web development + initial mobile scaffolding • 2–3 weeks: app finalization, QA, and cross-platform sync verification • 1 week: deployment, documentation, and hand-off I can provide detailed architecture diagrams and framework choices in the first milestone so you’re confident in scalability, security, and cross-device consistency. Best Regards, Fizza Nadeem K
$2.250 USD på 7 dage
5,6
5,6

Hello, I’m excited about the opportunity to contribute to your project. With my experience building real-time, cross-platform communication products, I can deliver a BAND-style platform with a consistent web, iOS, and Android experience, including synced chat + threaded posts, event scheduling with RSVP and reminders, secure searchable file sharing, polls with live results, status updates, and push notifications that reach devices within your five-second requirement. I’ll tailor the architecture around a single backend powering all clients, real-time messaging via websockets, a durable notification queue for push reliability, and clean permission models for groups and roles, using a cross-platform framework like React Native or Flutter alongside a responsive web UI to avoid feature gaps. You can expect clear communication, a structured timeline from product design through development, testing, and store-ready deployment, and a complete hand-off with source code, build scripts, and API documentation so your team can operate and extend the system confidently. Best regards, Juan
$1.500 USD på 7 dage
5,5
5,5

This is not just an app. It is a digital command center where conversations, events, files, and alerts move like a coordinated response team. If it lags, trust breaks. If it fragments, users leave. So architecture matters more than features. Here’s how I’d build it. Architecture Single backend using Node.js with TypeScript. Real time communication handled via WebSockets. PostgreSQL for structured data, Redis for caching and notification queues. File storage via AWS S3 or similar, with signed URLs for secure access. Frontend & Mobile React for web. React Native for iOS and Android so we share logic and keep feature parity. One API, one authentication system, zero gaps between platforms. Light and dark mode baked into the design system from day one. Core systems Real time chat and threaded posts powered by persistent socket connections. Event scheduling with RSVP tracking and device calendar integration using native bridges. Push notifications through Firebase Cloud Messaging and Apple Push Notification Service, optimized to hit within seconds. Polls, status updates, and file sharing built as modular services. Admin Console Browser based dashboard to manage groups, permissions, analytics, and moderation.
$1.500 USD på 7 dage
4,9
4,9

I am Sumit Joshi from Sacesta Technologies. I can build an end-to-end BAND-style platform that stays perfectly in sync across web, iOS, and Android, with real-time chat, events, files, polls, and push alerts that feel instant. I have two quick questions for the project • Do you need end-to-end encryption for chats and files, or standard server-side encryption with role-based access is enough? • For “status of receive”, should this be per group, per channel, or a global user setting with quiet hours and priority overrides? Why work with me: My name is Sumit. I build real-time collaboration systems with reliable syncing, role-based permissions, and secure media handling. For this platform I would use a shared UI layer for web and mobile to avoid feature gaps, a real-time messaging layer with offline support, and a notification queue with delivery tracking so pushes hit within seconds. File sharing would use secure object storage with resumable uploads, scanning hooks, and searchable metadata. Calendar workflows would include RSVP state, reminders, and native calendar writes on both iOS and Android. Relevant work • FileChannels: real-time file sharing with chat, voice, video, notifications, and CRM integrations • HustlerGuys CRM: role-based dashboards, activity logs, workflows, and reporting Please message me on Freelancer and I will share an architecture plan and a practical rollout approach that covers design, build, testing, and deployment. Regards, Sumit Joshi
$2.750 USD på 7 dage
5,2
5,2

Hey, I’m excited about your Emergency Community App & Website Suite project , building a BAND-style platform that flawlessly syncs across web and native iOS/Android apps is right in my expertise zone. With extensive experience in full-stack development, I specialize in React Native and Node.js, which I find perfect for your requirements. These frameworks enable seamless real-time chat, calendar syncing, and secure file sharing. I’d leverage Firebase for notifications and back-end services to ensure that push alerts hit within your 5-second window, and use microservices to modularize core functions like messaging and scheduling. To tackle your scope, I’d start with detailed product design focusing on responsive UI and consistent light/dark modes. Next, a robust backend with an API layer powers all features, followed by native app development ensuring App Store and Play Store readiness. Admin console development would round out the experience before thorough testing on current OS versions and finally deployment with full documentation and handoff. A realistic timeline for this comprehensive build is around 90 days, balancing quality and agility. I’d love to dive in and help bring your vision to life. Which feature would you prioritize for the initial launch: messaging, event scheduling, or file sharing? Best regards,
$2.500 USD på 26 dage
4,7
4,7

Pamplin, United States
Betalingsmetode verificeret
Medlem siden okt. 14, 2025
$250-750 USD
$30-250 USD
₹12500-37500 INR
$10000-20000 USD
$30-250 USD
$250-750 USD
$25-50 USD / time
₹12500-37500 INR
$3000-5000 USD
₹12500-37500 INR
$250-750 USD
$8-15 USD / time
$250-750 USD
$25-50 USD / time
₹600-1500 INR
€250-750 EUR
$30-250 USD
₹12500-37500 INR
$750-1500 USD
$1500-3000 USD
$30-250 USD