Cross-Platform CRM App Development

@Microlent

Hello, I am Dr. Rajesh Rolen, PhD in Computer Science & Engineering, with experience of over 20+ years in Android, Flutter, Mobile App Development, PHP, React Native, MySQL, Node.js, Laravel As a preferred freelancer in the top 1%, I have done 400+ projects here on freelancer.com, I have 4.9 ratings out of 5 on average, which showcases my quality of work and timely delivery. Key Highlights: - Free Hosting Support on the Cloud or any desired platform. - Free 3 months of post-delivery support to ensure that our client doesn’t face any challenges after the launch of the project. - Free Dedicated tester on projects to ensure quality delivery, so clients don’t need to act as a tester. - 10+ Years experience UI/UX team to ensure intuitive UI. Portfolio: https://www.freelancer.com/u/Microlent Please open the chat and send me a message, so we can have a more detailed discussion about the project to give you the project timeline and cost. Thank you for considering my services. I look forward to engaging in a productive conversation and understanding how I can be of assistance in bringing your project to life. Regards Rajesh Rolen

@rajat07me

A CRM like this lives or dies on architecture, not just screens. With customer records, lead movement, tasks/appointments, offline behavior, and future modules all depending on the same API layer, I’d structure this backend-first so the mobile apps and admin panel stay scalable instead of turning into patchwork after phase one. I’d lean toward Flutter + Laravel for this build unless you already have a strong preference otherwise. That combination works well for business apps needing stable cross-platform UI, role-based access, reporting, file handling, and a clean REST structure for future module expansion. I can also work in React Native/Node if there is a reason to align with that stack. I’m not in Lahore, but I can align updates with your daytime hours and work with staged delivery, testing, store deployment, and handoff. - Do you want the first release to include both the mobile apps and the web admin together, or should admin launch first? - For offline mode, do you need full record editing offline or mainly cached viewing with queued sync? - If you want, I can outline a practical milestone plan for phase 1 right here based on your MVP.

@webbookstudio

Hi there, We understand you're looking to develop a full-scale, cross-platform CRM application with a robust feature set, including customer management, lead tracking, and task management, along with secure user authentication and offline capabilities. Our team at Webbook Studio has extensive experience in mobile app development, with a portfolio that includes a music voting mobile app built with React Native, React.js, and Node.js, as well as a furniture store mobile shopping app developed with Flutter and Node.js. We'd propose using a tech stack of Flutter or React Native for the mobile apps, paired with Node.js on the back end, to ensure a seamless and efficient development process. Could you please share more details about your expected timeline and how you envision the staging and testing process for the application? Feel free to message us to discuss the details! — Webbook Studio

@gotucat

Hi, I reviewed the project and understand you need a cross-platform CRM app for Android and iOS with a web-based admin panel, including customer management, lead tracking, and task & appointment management. I’ll build the mobile app using React Native and deliver production-ready stores, while integrating clean REST-driven data sync for offline capability as the tech allows. On the backend, I’ll implement a structured API layer with Laravel and a clean database schema so future modules can plug in safely, covering secure user authentication, push notifications, file uploads, and analytics dashboards. I’ll keep work clean, communicate progress regularly, and support smooth staging, testing, and deployment. Let’s discuss here now.

@n2rtechnologies

Hi, Your offline-first requirement plus the dual mobile + admin panel setup tells me you're thinking about real-world usage — that's the hard part. We've shipped lead management and driver apps on React Native, so the CRM core is familiar ground. Node.js backend with solid REST design means future modules slot in clean. The budget and timeline shown are placeholders — actual numbers depend on offline scope depth and analytics complexity. Can we connect? Regards, Nurul Hasan

@tangramua

Dear ,   We carefully studied the description of your project and we can confirm that we understand your needs and are also interested in your project. Our team has the necessary resources to start your project as soon as possible and complete it in a very short time.   We are 25 years in this business and our technical specialists have strong experience in PHP, Mobile App Development, Android, MySQL, Node.js, Laravel, React Native, Flutter and other technologies relevant to your project.   Please, review our profile https://www.freelancer.com/u/tangramua where you can find detailed information about our company, our portfolio, and the client's recent reviews.   Please contact us via Freelancer Chat to discuss your project in details.   Best regards, Sales department Tangram Canada Inc.     

@ykarora26

With over three years of mobile development experience, including creating CRM apps, I'm well-equipped to handle your full-scale CRM project. I understand the need for seamless integration between Flutter, React Native, and Node.js/Laravel for Android and iOS builds plus a web-based admin panel. Can you provide insights on your preferred approach to user authentication to ensure maximum security and usability? Regards, Yogesh Kumar

@corpmember29

Hello, Cross-Platform CRM Development Specialist I have carefully reviewed your requirements for a production-ready CRM covering customer management, lead tracking, tasks and appointments across Android, iOS and a web admin panel. I have 11+ years of experience in mobile and web development and recommend Flutter + Node.js + PostgreSQL for this project. This stack will provide a scalable API architecture, strong cross-platform performance and a clean foundation for future CRM modules. I will build secure authentication, customer and lead management, task/appointment workflows, REST APIs, push notifications, file uploads, analytics and offline data synchronization. The backend will be modular so additional features can be added without restructuring the core system. I will follow staged development with regular test builds, API testing, QA, performance optimization and final Android/iOS deployment preparation. I WILL PROVIDE 2 YEARS OF FREE ONGOING SUPPORT AND COMPLETE SOURCE CODE. I can start immediately and provide regular progress updates. Thanks, Christina

@rahuliitm69

Hi, I can develop your full-scale CRM app for Android, iOS, and a web-based admin panel. I’ve already developed similar business/CRM platforms with customer management, lead tracking, tasks, appointments, authentication, REST APIs, notifications, file uploads, and analytics. My preferred stack: Flutter + Node.js + PostgreSQL/MySQL. Flutter gives consistent performance across iOS/Android, while Node.js provides a scalable API architecture for future CRM modules. Development approach: • UI/UX implementation + project architecture • Authentication & role-based access • Customer, leads, tasks & appointments • REST APIs + database design • Push notifications, uploads & offline sync • Admin dashboard & analytics • QA, staging, deployment & App Store/Play Store release Questions: Do you already have the UI/UX designs and detailed workflows? How many user roles and permission levels should the CRM support? Thanks Rahul

@onkarkulkarni8

Hello, I can help you with "Cross-Platform CRM App Development" as per your given project description. We can discuss more in detail during a chat conversation when you are available. I've worked on many PHP projects in recent times. So I am confident on achieving your expected Goals. Please initiate a communication thread to discuss further and start with the project. ⭐ 5.0/5 from a recent client: "A more professional version: “Excellent work! The job was completed within the committed timeline. Great quality, professionalism, and timely delivery. Highly appreciated and recommended.”" Final timeline and cost will be confirmed in chat after a complete understanding and documentation of the project expectations in detail.

@installerpoint

Good Day! I have carefully analyzed your project and can develop a production-ready cross-platform CRM with Flutter/React Native, a scalable Node.js/Laravel backend, REST APIs, authentication, offline support, notifications, file uploads, analytics, and web admin panel. I’ll provide a clean architecture, regular progress updates, structured milestones, testing, and app-store deployment support. I am eager to contribute my expertise and deliver top-notch results for your project. Let's discuss the project further in chat or let's have a quick call! Best regards, M Adeel.

@managersingh

Hi I can build the CRM across Android, iOS, and web with a scalable API and clean database architecture. I’d recommend Flutter + Node.js for consistent cross-platform performance and maintainability, with REST APIs, authentication, notifications, uploads, analytics, and offline support planned from the start. I’ll break delivery into clear milestones covering CRM modules, admin panel, testing, staging, and app-store deployment, with regular progress updates. I’d be happy to discuss the scope and provide a milestone-based quote. Thanks

@Hammadhassan21

Hi, The key challenges are offline data sync, a scalable API/database structure, and keeping mobile and admin workflows consistent as new CRM modules are added. I’d recommend Flutter + Node.js and NestJS + PostgreSQL, with REST APIs, role-based authentication, push notifications, file uploads, and a responsive web admin panel. This gives us a strong foundation for customer management, lead tracking, tasks, appointments, and future analytics. I’ll structure the build in milestones with regular progress updates, staging, testing, and final App Store/Google Play deployment. Do you want the admin panel included in the first MVP, or should we focus on the mobile CRM first and add it in the next phase? NOTE: Lets start immediately and get visible results not theory. My portfolios freelancer.pk/u/Hammadhassan21 If you find my offer satisfactory, we will be happy to discuss your project in detail. Best regards, Hammad H..

@point2solutions

--- Cross-Platform CRM Application Development --- I can help build your CRM application for Android, iOS, and web, starting with customer management, lead tracking, and task and appointment management. Here's my approach: → Build the mobile app using Flutter or React Native, with Node.js or Laravel for the backend. → Develop a web-based admin panel, secure authentication, REST APIs, file uploads, notifications, and offline support where applicable. → Structure the database and API layer so new CRM modules can be added later. → Follow milestone-based development with staging, testing, and deployment support for both app stores. Flow User Login → Customer Management → Lead Tracking → Tasks & Appointments → Notifications → Reports Question Do you already have UI/UX designs and a detailed feature list for the first CRM version, or should the initial scope include wireframing and system planning? Let's connect... Thanks

@nikhilgarg96

Hi, With over a decade of experience, our team at Nikhil Tech has developed a robust understanding of the challenges and solutions needed to create functional, scalable, and user-friendly CRM platforms. Our portfolio includes a range of CRM systems and business-centric apps; we’ve tackled everything from customer management to data-driven analytics tools. We boast solid skills in Android app development, adept at maximizing the possibilities of Flutter and React Native to deliver top-notch cross-platform experiences your customers will appreciate. For the back end, we leverage extensive expertise in both Node.js and Laravel to ensure consistent data synchronization and secure user authentication. Our structured approach to database schema design ensures easy integration with future modules. Complementing these technical skills are our clear communication channels and solid project management which enable us to keep you updated on progress regularly according to your timezone. Given our deep understanding of your project requirements, outlined in your itemized feature list, I can propose a timeline that ensures milestone-based progress, systematic staging and testing, deployment schedules that include complete write-up documentation followed by successful listings on both app stores. This disciplined approach also translates into fair pricing with no hidden surprises. Thanks....

@VirasatSolutions

Hello, I can build your cross-platform CRM for Android, iOS, and a responsive web admin panel with a scalable API-first architecture. Recommended Stack: Flutter + Laravel/Node.js + PostgreSQL/MySQL. Flutter provides a maintainable single mobile codebase, while a structured REST API will make future CRM modules easy to integrate. Phase 1 includes: • Customer management • Lead tracking & pipeline • Tasks & appointments • Secure authentication & roles • REST API & database architecture • Push notifications • File uploads • Analytics dashboards • Offline capability where practical • Web-based admin panel I’ll follow structured staging, testing, QA, and deployment processes, with regular progress updates and coordination during your preferred daytime hours. Estimated Timeline: 8–10 weeks Milestones: Architecture → UI → Core CRM → API/Admin → Notifications & Offline → QA → Deployment Rate: $15/hour / fixed quote after final scope review Location: India I’m ready to start with the architecture and core CRM modules immediately.- Abhishek

@shubhamshrimal7

Hello, Greetings Hope you are doing well. I am a Mobile Application developer with over 5 years of experience. I am confident in my ability and skills to develop high-quality Mobile apps and would like to work on your CRM app project. I will complete the work as per your requirements. I want to discuss more this project to prepare the final concept. So let’s discuss this in detail over chat then will make plans to start work on it. Waiting for your earliest reply. Thanks. Shubham

@ranjika08

Your first phase already has the hard parts that usually break CRM apps later: shared data models across mobile and admin, reliable sync, permissions, and room for future modules. I’d handle this by defining the database and API contracts early, then building the core flows around customer, lead, and task lifecycles so later additions plug in cleanly. For this kind of business app, I’d usually recommend Flutter with a Laravel backend and a web admin built around the same API. That stack is strong for structured dashboards, authentication, file uploads, notifications, and maintainable growth. We’ve worked on business-focused systems where the real value was not just shipping features, but keeping the codebase organized enough to scale without rewrites. I can share progress on a regular cadence and adapt updates to your daytime window. - Do you already have wireframes or should the admin and app flows be planned from scratch? - Will appointments need calendar integrations or just in-app scheduling for now? - Are there different staff roles planned from day one, such as admin, sales, and support?

@doomshellsl

Hi, We can build your CRM as a scalable cross-platform product covering Android, iOS and a web-based admin panel, with a backend architecture designed for future modules. We recommend Flutter + Laravel + MySQL: • Flutter for a consistent Android/iOS experience • Laravel REST APIs for secure, maintainable backend services • MySQL for structured CRM data • Web admin dashboard for management and analytics Initial modules can include: • Customer and lead management • Tasks and appointments • Authentication and role-based access • REST-based data synchronization • Push notifications • File/document uploads • Analytics dashboards • Offline-first capabilities where practical • App Store and Google Play deployment We’ll structure the API and database so future CRM modules can be added without rebuilding the foundation. Our delivery approach would be milestone-based: UI/UX & architecture → API/database → core CRM modules → mobile integration → admin dashboard → offline/notifications → QA → store deployment. We can provide relevant business/mobile application examples and maintain regular progress updates throughout development. We’re also comfortable collaborating remotely with your Lahore-based team and working around your preferred communication hours.