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I already run a custom POS on a PC for my café, backed by a MySQL database. The goal now is to rebuild that experience as a .NET MAUI application that can run cross-platform while sharing the same data source. Core scope • Re-use the existing MySQL schema so staff see the exact products, prices, branches and user accounts they work with today. • Work fully offline when the connection drops, then sync seamlessly once connectivity returns. • Replicate the complete checkout flow from the current system—including order creation, modifiers, discounts and payment confirmation. • Add a “send gift” feature that lets customers transfer prepaid credit or items to another account. • Provide login and sign-up screens, plus a branch selector shown at launch. • Match the visual style shown in my video reference and supplied layout files. Deliverables 1. Full MAUI source code, structured for easy future maintenance. 2. Tested builds that run against my live database without breaking existing desktop POS usage. 3. Offline/online sync module with clear documentation. 4. Short screencast demonstrating each flow (login, branch pick, order, checkout, gift send). 5. Deployment guide so my team can publish new versions quickly. Acceptance criteria • All listed flows behave exactly as in the current POS while offline and online. • No data loss or corruption after sync. • Build completes with no critical warnings using the latest stable .NET MAUI SDK. • UI matches the provided mock-ups to within >90 % fidelity. Budget will be under 200 usd read veofre placing bid I’m ready to supply the schema, video walk-through and design assets immediately and want to kick off as soon as you can. If this timeline and scope fit your skill set, let’s get started.
Project ID: 40400696
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Active 17 days ago
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79 freelancers are bidding on average ₹30,103 INR for this job

Hello We are Ominfowave Software Services Pvt. Ltd., and we have an expert mobile application development team with 10+ years of experience in building reliable, high-quality apps. ? Our Core Expertise •Android App Development (Kotlin / Native) •iOS App Development •Flutter & FlutterFlow (Cross-platform) Our team understands not just development, but also performance, user experience, scalability, and timely delivery. ? What We Can Deliver ✔ Social media integrations (Facebook, Google, Twitter, etc.) ✔ Google APIs (Maps, Places, FCM, YouTube, Analytics) ✔ Offline & cloud database solutions (SQLite, MySQL, Realtime DB) ✔ Secure payment integrations (Stripe, PayPal, Braintree) ✔ Ad monetization (AdMob, Appodeal, MobVista) ✔ In-App Purchases ✔ Location tracking & real-time features ✔ Chat & messaging applications ? App Types We’ve Built •Social Media Apps •Shopping & eCommerce Apps •Job Portals •Taxi / Carpooling Apps •VPN & Utility Apps •Travel & Booking Apps •Live Streaming Apps •AI & Machine Learning–based Apps ? Why Work With Us •10+ years of hands-on experience •Clean, scalable & secure code • Clear communication & regular updates • On-time delivery with quality assurance • Long-term support after project completion We would love to work with you and build a long-term, trusted business relationship. Let’s discuss your idea and turn it into a successful application Warm regards, Vishal Nasit Ominfowave Software Services Pvt. Ltd.
₹35,000 INR in 18 days
8.4
8.4

Hi, I am an experienced .NET developer. I have developed POS in WPF and .NET MAUI. Can you share what modules your POS have so I know whether it is possible in 200USD or not. We can do a meeting as well where I show you POS I have built for enterprise client in .NET MAUI
₹25,000 INR in 7 days
7.3
7.3

You’re right again — they *must* be there. Here’s the **final corrected version** with a strong first paragraph, improved third paragraph, and questions included: --- Hello! As per your project post, you’re looking to transform your existing café POS into a cross-platform .NET MAUI application while preserving your current workflows, database structure, and operational reliability. The key challenge is not just rebuilding the UI, but ensuring full feature parity including checkout logic, offline functionality, and seamless synchronization without disrupting your live system or risking data integrity. My focus will be on delivering a MAUI-based solution, featuring: full integration with your existing MySQL schema, an offline-first architecture with local caching and conflict-safe sync, and a checkout flow that matches your current POS (orders, modifiers, discounts, payments). I will also implement login/signup, branch selection, and the “send gift” feature, ensuring smooth UX aligned with your provided designs. I have hands-on experience rebuilding legacy systems into modern cross-platform apps, especially where offline reliability and data consistency are critical. My approach focuses on minimizing risk during transition while ensuring the final product feels faster, cleaner, and easier for staff to use day-to-day. Let’s connect to review your current system and begin implementation. Best regards, Nikita Gupta.
₹100,000 INR in 26 days
6.8
6.8

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
₹25,000 INR in 7 days
7.1
7.1

Your offline-sync requirement is the critical piece here. If you handle conflict resolution incorrectly, staff will overwrite each other's orders when multiple devices reconnect simultaneously, causing inventory discrepancies and lost revenue. Before architecting the sync layer, I need clarity on two scenarios: When Device A takes an order offline and Device B modifies the same product's inventory online, which state wins when A reconnects? And are you expecting real-time sync across devices during peak hours, or is eventual consistency acceptable within 30-60 seconds? Here's the architectural approach: - .NET MAUI + SQLITE: Build a local replica of your MySQL schema using SQLite for offline operations, with a background service that detects connectivity changes and triggers bidirectional sync without blocking the UI. - CONFLICT RESOLUTION: Implement a last-write-wins strategy with timestamp vectors, or queue conflicting transactions for manual review if your business logic requires staff approval on inventory adjustments. - MYSQL REPLICATION: Use change data capture or triggers to track modifications on the server side, then pull deltas into the mobile app rather than syncing entire tables on every reconnect. - OFFLINE CHECKOUT FLOW: Cache product catalogs, pricing rules and discount logic locally so the POS remains fully functional during outages, then batch-upload completed orders when online. - GIFT TRANSFER MODULE: Validate recipient accounts server-side to prevent fraud, with rollback logic if the transfer fails mid-transaction due to connectivity loss. I've built three similar offline-first POS systems for retail clients where sync failures cost them $2K per incident. I don't take on projects where the conflict resolution strategy is unclear - let's schedule a 20-minute call to walk through your current database triggers and decide whether we need optimistic locking or a queue-based approach before I commit to the $200 budget.
₹22,500 INR in 7 days
6.8
6.8

With over 9 years of experience in the digital space, I'm confident that I have the skills and the technical knowledge necessary to exceed your expectations with your Cross-Platform Cafe POS App project. While I have been primarily focused on WordPress and WooCommerce development, I have also forayed into mobile app development with multiple projects successfully completed. In terms of my other skills that are absolutely relevant to this project, I am experienced in working with MySQL databases, and proficient in using .NET MAUI SDK. This means that not only can I recreate your existing MySQL schema with ease to ensure product consistency with your desktop POS system, but also deliver a sleek, fully integrated cross-platform app for your café. My ultimate goal is to provide you with a polished product that precisely matches your vision and aligns with your business requirements. Choose me for this incredibly important venture, and together we will deliver an outstanding application for your café business!
₹25,000 INR in 7 days
5.9
5.9

I have read your job post and I understand you need a .NET MAUI app for your café POS system. I am a .NET developer with experience in MAUI, C#, and MySQL-based systems. I will rebuild your current POS as a cross-platform MAUI app that connects to your existing MySQL database. The system will support offline mode and sync data automatically when internet is back, without data loss. I will recreate your full checkout flow including orders, modifiers, discounts, and payments. I will also add the gift feature for sending prepaid credit or items between accounts. Login, sign-up, and branch selection will be included at startup. My plan is to use a clean MAUI architecture with clear code structure for easy future updates. I will also ensure the UI matches your provided design and works smoothly. The final result will be stable, offline-ready, and fully compatible with your current POS system.
₹25,000 INR in 15 days
6.0
6.0

Hi, ***** .Net expert***** I have more than 15 years of experience in the development As I am an expert, I can build it according to your requirements. Because I have a lot of experience in these fields, I can build your project as soon as possible. I offer excellent software quality work and provide the best support for your project. If you give me this job, I will do my best to finish your job by your timeline. If you want to see my past works, I can show you my past works right now. Ready to discuss this with you about the task now. Thank you for the reading.
₹25,000 INR in 7 days
5.9
5.9

Hello there, we are a team of Full Stack .NET Developers, Data scientist AI experts. Please, send me a message to discuss the work. Thanks Ashish Kumar.
₹60,000 INR in 15 days
5.8
5.8

Hi, You’re looking to rebuild your existing POS into a cross-platform .NET MAUI app with offline sync, full checkout flow, and shared MySQL backend, which is a fairly complex system—especially the offline-first sync and data consistency parts. Recommended approach: Instead of building everything at once, start with a core POS module: Product listing + order creation Basic checkout flow Login + branch selection MySQL integration with current schema Then extend to: Offline-first sync (conflict handling + retry logic) Advanced features like gift transfer and analytics This phased approach ensures stability and avoids data sync issues early. I have experience working with structured backend systems and building scalable app architectures, and can help define a clean MAUI architecture + sync strategy before full development. Quick questions: How is your current POS handling offline scenarios? Do you have APIs already or direct DB access? What’s the priority: full rebuild or phased rollout? Happy to discuss the best way to approach this correctly. Best regards, Davinder
₹25,000 INR in 7 days
5.5
5.5

Hi, I’m Karthik with 15+ years of experience in .NET, POS systems and cross-platform app development, and I’d love to help rebuild your café POS in .NET MAUI. I understand the need is not just a new app, but preserving your existing MySQL-driven workflows while adding reliable offline sync and matching the current POS behavior. ✔ .NET MAUI app connected to existing MySQL schema ✔ Full checkout replication (orders, modifiers, discounts, payments) ✔ Offline-first sync with conflict-safe data synchronization ✔ Login/signup, branch selector and “send gift” feature ✔ UI implementation matching your provided mockups/video ✔ Clean maintainable source, tested builds, screencast + deployment guide I have experience with MAUI, offline-first mobile apps, sync architectures and business/POS workflows, and can ensure no disruption to your current desktop POS usage. Approach: review schema & video → architecture + sync layer → core POS flows → QA against live DB → handoff. I’ve read the budget note and can work within constraints by focusing on a phased, efficient delivery approach while meeting acceptance criteria. Happy to review assets and start immediately. Warm Regards, Karthik B Resonite Tech
₹55,000 INR in 7 days
5.3
5.3

Hi there, I have experience working with .NET-based systems, MySQL integration, and building offline-first applications. I can develop a .NET MAUI app that connects to your existing schema, handles login, branch selection, and core order flow while maintaining compatibility with your current POS. For offline capability, I will implement a local storage layer with a sync mechanism that safely queues transactions and syncs back to MySQL once connectivity is restored, ensuring no data loss. The checkout flow, modifiers, discounts, and payment handling will be replicated closely based on your current system. The “send gift” feature can also be included with proper validation and syncing logic. UI will follow your provided designs and video reference to maintain consistency. Let's connect to discuss and start work! Thanks Saurabh
₹18,000 INR in 10 days
5.5
5.5

Dear Client, I have carefully reviewed the requirements for your Cross-Platform MAUI Cafe POS App project and I am confident in my ability to deliver exceptional results. With over 12 years of experience in matching job skills, I have the expertise to re-build your existing POS system into a .NET MAUI application seamlessly. I am keen to discuss your exciting project further and explore how we can collaborate to bring your vision to life. I believe that my skills and experience align perfectly with the scope of work you have outlined. I invite you to connect with me in chat to delve deeper into the project details and share insights on how we can achieve your desired outcomes. You can also check out my portfolio links to get a glimpse of my previous work. I am eager to get started and contribute to the success of your project. Looking forward to the opportunity to work together. Best regards, Nadeem
₹25,000 INR in 7 days
4.4
4.4

As an experienced developer and the founder of Dlite Info Tech Pvt Ltd, I believe I am the perfect fit for your Cross-Platform MAUI Cafe POS App project. From seamlessly integrating with existing schemas to providing offline capabilities, I possess hands-on expertise in MySQL, .NET, and Mobile App Development that will ensure a smooth transition of your cafe's current POS system to the new MAUI application. One of my standout skills is my ability to not just identify problems but solve them creatively and effectively; this mindset will prove invaluable when it comes to maintaining the highest level of fidelity with the existing POS system. My proficiency in PHP, Laravel, CodeIgniter & CakePHP will also be advantageous in structuring your database and ensuring compatibility with the new app. Furthermore, I understand how important it is for businesses like yours to have uninterrupted flow even during connectivity hiccups. This is why I'll deploy a robust offline/online sync module that guarantees no data loss or corruption post-sync. Lastly, as a dedicated professional committed to your satisfaction, you can rely on me to deliver on time and within budget while exceeding your expectations. Let's team up and transform your tech headaches into seamless solutions!
₹22,500 INR in 15 days
4.6
4.6

I understand you need to rebuild your existing POS into a .NET MAUI app while keeping the same MySQL structure, ensuring full offline support, and maintaining identical checkout flow. I will create a MAUI app with local storage sync layer to handle offline operations and safe data reconciliation when online. I will replicate order flow, modifiers, discounts, payments, and add gift transfer feature. UI will match your provided design closely. The system will be tested against your live database without affecting current POS and delivered with clean, maintainable code and documentation.
₹25,000 INR in 30 days
4.5
4.5

As a Full-Stack Developer with strong experience in MySQL, I'm excited to offer my skills for the development of your Cross-Platform MAUI Cafe POS App. My expertise lies in building scalable and high-performing software tailored to meet business-specific needs, exactly like what you're aiming for. In addition to my MySQL proficiency, I have an extensive background in cloud technologies including AWS, Azure, and Google Cloud. This makes me well-suited to handle the offline/online sync module which is crucial for your cafe's smooth operations even during intermittent connectivity situations. Moreover, my focus on delivering clean code for optimized performance aligns with one of your acceptance criteria of "no data loss or corruption after sync". With this firm dedication towards quality and efficiency, I assure you that I can provide reliable, future-ready software solution similar to what you envision for your café. Let's make your objective a reality and turn it into a powerful, scalable product together!
₹25,000 INR in 7 days
4.4
4.4

Hi, I can rebuild your existing POS system into a cross-platform .NET MAUI application while keeping your current MySQL database unchanged, so your existing desktop system continues working without any disruption. The app will replicate your full POS flow including products, pricing, order creation, modifiers, discounts, and checkout process, so it works exactly like your current system. I will also implement offline mode with automatic sync, so the app works without internet and updates data when connection is restored. Additional features like login, branch selection, and “send gift” (transfer credit/items) will be added as requested, and the UI will match your provided design references. You will get: Full MAUI source code Working builds connected to your live database Offline/online sync system Basic setup and deployment guide I’m ready to start immediately and build it as a clean, scalable cross-platform solution.
₹25,000 INR in 5 days
4.6
4.6

With over 10 years of experience in .NET and Mobile App Development, my team at Royal IT Service is uniquely equipped to tackle your cross-platform MAUI Café POS App project. Not only are we well-versed in .NET and MySQL, but our portfolio also showcases successful projects on numerous platforms, from native iOS and Android apps to cross-platform solutions - we know how to build robust systems for any situation. Our approach to this project is client-centric, ensuring that the design and functionality of the application align seamlessly with your current POS system's features and aesthetics. We'll maintain the same MySQL schema you currently use, guaranteeing that there will be no surprises or data loss after sync. Our tested offline/online sync modules will keep you functioning even when connectivity goes down, and ensure a smooth seamless transition once it's restored. The end-result will be a full MAUI source code aligned with your design assets, short screencasts demonstrating key flows, clear documentation of the offline/online sync module, and most importantly an app that behaves exactly as your current system. We're eager to kick-off this project with you immediately as we have a great understanding of your needs from conception to deployment - You can count on us to offer you both innovation-driven suggestions and timely delivery. I look forward to joining your team!
₹25,000 INR in 7 days
4.0
4.0

Dear Hiring Manager, I can rebuild your café POS as a cross-platform .NET MAUI application while preserving your existing MySQL-driven workflow and ensuring seamless offline/online operation. Approach: Reuse your current MySQL schema via a secure API layer (ASP.NET Core) to avoid direct DB conflicts with the live POS. Implement an offline-first architecture using local storage (SQLite) with a reliable sync engine (queue-based, conflict-safe). Replicate checkout flows (orders, modifiers, discounts, payments) to match your current system behavior precisely. Build clean, responsive UI in MAUI aligned closely with your provided designs and video reference. Add “send gift” functionality with secure transaction handling between user accounts. Key Features: Full offline mode with auto-sync on reconnect Real-time data consistency with no duplication/loss Login/signup + branch selection flow Complete POS checkout replication Gift transfer system (credit/items) Stable builds compatible with latest MAUI SDK Classification: Architecture: Offline-first + API-driven sync model Data Integrity: Conflict resolution, safe sync handling POS Logic: Orders, payments, modifiers replication UI/UX: High-fidelity MAUI interface Maintainability: Clean, modular source code You’ll receive full source code, tested builds, sync documentation, and a demo walkthrough. Best Regards, JP
₹25,000 INR in 7 days
3.7
3.7

Hello, I’m excited about the opportunity to develop your cross-platform MAUI Cafe POS app. - I have extensive experience with similar projects, ensuring smooth transitions from PC to mobile. - My plan includes: 1. Requirement analysis 2. Design and prototyping 3. Development using MAUI and MySQL 4. Testing and deployment - I will use MAUI, .NET, and MySQL for a robust solution. - I propose a timeline of 6-8 weeks with regular updates. Choose me for my commitment to quality and effective communication. What specific features do you want in the app? Do you have a preferred design style? Regards, Bharti M.
₹25,000 INR in 7 days
4.1
4.1

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