Windows Desktop App Development

@vano101

Hello! I can build a reliable Windows POS billing application and connect it cleanly to your existing Supabase backend. I’m a C++/Windows desktop developer with 25+ years of experience, including modern C#/.NET desktop applications, database/API integration, and user-focused Windows interfaces. I can deliver a responsive, maintainable POS with billing, product/customer handling, data synchronization, validation, and the required Supabase API integration. I will first review your existing Supabase schema/API and define the POS workflow before implementation to avoid unnecessary changes to your backend. Thanks!

@ykarora26

With 5+ years in Windows app development and a keen eye for UX/UI design, I understand the need for a user-friendly Windows desktop application with robust functionality. Could you share more specifics about the desired features for the application to ensure I tailor my proposal accordingly? Regards, Yogesh Kumar

@spiderSoft007

Hi I have a great experience in billing or pos for windows and i have done mamy custom billing application for different clients please message me to discuss more on this and I can start immediately.

@ASSAMWEB

Greetings, I have reviewed your project description and recently worked on a similar project. I believe I can help you deliver this successfully. Let’s open a chat to discuss your requirements in detail and determine the best approach for your project. Regards

@Mayurisharma7619

Dear Client, I can build a Windows desktop POS billing software connected with your existing Supabase backend, with a simple and user-friendly interface. I have 6+ years of experience in software and application development and can handle the complete desktop application development, Supabase integration, database operations, billing flow, and required functionality. I will focus on keeping the application easy to use, stable, and responsive. I can share my relevant work links in the chat box. Looking forward to your response on chat box. Thanks.

@DeMit19

Hello, I built a similar Windows desktop app in C# where I reduced a 7-step workflow to 3 steps and made the interface much easier to use. I can build your Windows application with a clean UI, reliable functionality, and a structure that is easy to maintain. I’d use C# with WPF or WinUI in Visual Studio, depending on the final feature set. The main focus will be keeping the app fast, intuitive, and stable on Windows. Once complete, I’ll provide the source code, setup instructions, and a tested build ready to run. What are the main features you want included in the first version? Thanks, Dejan

@richard031596

You need a Windows POS billing application with a simple desktop interface connected to your existing Supabase backend, keeping billing and data operations straightforward for staff. I can build the application in C#/.NET with Visual Studio, using a clean Windows UI and Supabase APIs for authentication, products, customers, invoices, payments, and transaction records. My backend experience with Python, Node.js, Java/Spring, PostgreSQL, REST APIs, and database-driven applications also helps with reliable data synchronization and validation between the desktop client and Supabase. I can structure the POS so the core billing workflow is fast and easy to use, while keeping the code modular for future additions such as reports, inventory, printing, user roles, or barcode support. I’ll also test the application on Windows and provide a straightforward handoff. Can you share the existing Supabase schema/API details and the POS billing workflow you want for the first version?

@CVTPL

We, at Cian Vision Technologies (P) Limited (CVTPL), would be glad to develop your Windows-based POS billing application and integrate it smoothly with your existing Supabase backend. We understand that a billing system needs to be reliable, straightforward, and quick to use, so our focus would be on a clean interface, efficient billing workflows, and stable communication with your existing backend. Our team can work around your current Supabase structure and build the application with a practical architecture that is easy for staff to understand and use. We’ll also pay close attention to usability, data handling, performance, and the day-to-day requirements of a POS environment rather than overcomplicating the application. We'd be glad to connect for a quick call to understand your existing Supabase setup and the core billing workflow you have in mind. We look forward to building a reliable and user-friendly POS solution tailored to your requirements. Best regards, Team CVTPL.

@dushyant317

Hi, we can build your Windows desktop POS billing application with a clean, user-friendly interface and reliable integration with your existing Supabase backend. We can handle billing, product/customer data, authentication, database operations, validation, and reporting as required, while keeping the application stable and easy to maintain. We’ll provide the complete source code, Windows build, and clear setup/documentation for future updates.

@Visharaa2024

Hi, Connecting the POS directly to your existing Supabase backend is a sensible approach and can keep the application lightweight without duplicating your backend. I’d recommend a Windows desktop application using Electron, React and TypeScript, with a clean POS-focused interface designed for fast daily operation. I’d first review the existing Supabase schema, authentication, permissions and available data before implementing the billing workflows. The application can then be structured around the core POS flow: product selection → cart → pricing/tax calculation → payment → invoice/receipt → transaction record, with the exact features finalized based on your current backend and business requirements. I’d also focus on keyboard-friendly interactions, clear error handling and a maintainable component structure so the application remains easy to extend. One important question: what POS functions are already supported by your Supabase backend, and do you require thermal-printer/receipt printing? If this aligns with your requirements, we can proceed with the backend review and feature breakdown. Best regards, Deepak.

@braing2

Hello, I built 7 products in 7 days, and every client I've worked with on Freelancer has said they'd hire me again. I'll connect the app to your existing Supabase project as it is, reading your current tables and access rules first so nothing on the backend has to change. Billing will cover product search and barcode scanning, a cart with discounts and tax, printed receipts on a normal or 80 mm thermal printer, and a day-end sales summary. It installs as a normal Windows .exe, with large clear buttons so a cashier can bill quickly. I've also built a UPI QR payment module for Odoo POS and a Shopify-to-Odoo GST connector, so I know how bills, tax lines and stock need to stay in step. Before handover I'll check every test bill against the totals saved in Supabase. Amul

@Nittin

Good Morning, With over 17+ years of experience building high-performance web applications—including enterprise-level solutions for CMMI Level 5 companies like Infogain, Ameriprise and Dell—I help clients design, develop, and scale robust software solutions. Core Technical Stack: Backend: .NET Core, ASP.NET Core, MVC, C#.NET, Web API / RESTful APIs Frontend: Angular (9+), TypeScript, HTML5/CSS3, JavaScript/jQuery Database & Architecture: SQL Server, PostgreSQL, Database Design, Performance Tuning, Microservices Data, AI & Enterprise Platforms: Palantir Foundry, Palantir AIP Builder, AI/ML (Machine Learning, NLP), Ontology Design Recent Highlights & Specializations: Palantir Foundry & AIP: Hands-on experience architecting production-level Enterprise AI and data platforms. Recently delivered global risk platforms (GRA) and automated document/lease reconciliation platforms (Rent Roll) using Palantir Foundry and AIP Builder. Whether you need to build an application from scratch, modernise an existing .NET codebase, optimize database performance, or integrate Angular and AI-driven platforms, I can deliver clean, maintainable, and secure code on schedule. I’d love to learn more about your project goals and discuss how I can help bring them to life. Best regards, Nittin Aggarwal

@dheergupta35959

Hello, I’m interested in developing your Windows-based POS billing application and integrating it with your existing Supabase backend. I’m a full-stack developer experienced in building business applications with a focus on clean UI, reliable workflows, API/database integration, and maintainable architecture. For your POS application, I can provide: • Windows desktop application with a clean, user-friendly interface • Product/item and customer management • Fast billing and checkout workflow • Invoice generation • Tax, discount, and payment handling • Sales/order history and search • Supabase authentication and database integration • Proper validation, error handling, and security • Scalable architecture for future features I can use C#/.NET with WPF or WinUI for the Windows application, depending on your specific requirements and existing backend architecture. My approach would be to first review your existing Supabase database, APIs, authentication, and business rules. Then I’ll design the POS workflow and build the application around your actual requirements rather than making assumptions. I can also handle testing, Windows packaging/deployment, documentation, and post-development fixes. I’d be happy to review your existing Supabase setup and discuss the required POS workflow so we can finalize the scope, timeline, and estimate. Best regards, Dheer

@CVDLFourie

Creating a Windows desktop application that is user-friendly and functionally robust is crucial to meet your needs. A suggestion would be to implement a modular design approach, allowing for easy updates and feature additions in the future, which will enhance user experience and adaptability. I can provide a quick mockup of the proposed interface and core functionalities so you can see how I approach the project before making any decisions. What specific technologies or frameworks are you considering for this application? Regards, CVDLFourie

@stephena010

Hi! I understand you need a reliable Windows POS billing application that connects smoothly with your existing Supabase backend without making the system complicated for users. I can build a clean, user-friendly desktop interface with the core billing functionality, proper Supabase integration, and a stable workflow for handling your POS operations. I'll focus on making the application easy to use, responsive, and organized while ensuring the frontend communicates properly with your existing backend. I can also work with your preferred framework or recommend a suitable Windows technology based on your current Supabase setup. I'd be happy to discuss the existing backend, required POS features, and project scope. Message me now to discuss further on the project and let's get started!

@sniegul

Hi, I've reviewed your project "Windows Desktop App Development". I have hands-on experience with relevant technologies and can deliver a clean, well-tested result on time. I'm available to start now and happy to walk through my approach or share similar past work. Looking forward to working with you.

@Kkarthiksh1989

Hi, I am writing to express my interest in building your Windows POS Billing application connected to your existing Supabase backend. My name is Karthik, and I specialize in high-performance C# / .NET 8 Windows desktop applications paired with cloud backends like Supabase (PostgreSQL, Realtime, and Auth). Here is a summary of how I will deliver your project: 1. Modern Tech Stack: C# .NET 8 (WPF) desktop app using the official Supabase C# SDK for instant, real-time synchronization of products, stock, and sales transactions. 2. Fast Cashier Interface: Designed specifically for rapid entry via touchscreen or barcode scanners, complete with cart management, tax calculations, and multi-payment options. 3. Hardware Ready: Native integration with 80mm/58mm thermal receipt printers (ESC/POS) and automatic cash drawer opening. 4. Offline Protection: Built-in local cache (SQLite) so billing never stops, even if your internet connection drops momentarily. Commercial Overview: • Estimated Timeline: 2.5 to 3 Weeks • Fixed Price Quote: $1,600 USD (Includes full source code, installer package, and 30 days of post-launch support) I am available to start immediately and would be glad to review your current Supabase database schema to ensure a seamless integration. Best regards, Karthik

@Sirchon

Thanks to my solid background in web development, data analysis, and user interface design, I possess a multifaceted skill set that makes me the ideal candidate for your Windows desktop application project. I excel not only in creating fast, high-performance websites but also in designing clean, intuitive interfaces that enhance the user experience—a crucial aspect of any invoicing software. My proficiency in developing Windows applications—characterized by efficiency and adaptability (responsive design)—aligns perfectly with your project requirements. My technical capabilities go beyond standard programming; my mastery of WordPress demonstrates great versatility across various platforms. This gives me a unique advantage in fully leveraging the potential of the Supabase backend, ensuring seamless integration for your proposed Point of Sale (POS) software. What truly sets me apart is my unwavering commitment to results-driven work. Beyond the need for a robust, user-friendly system, I prioritize optimizing security, architecture, and performance to achieve maximum impact. My meticulous attention to detail and ability to work independently will undoubtedly take your desktop application to the next level! Don't settle for less—choose a freelancer who cares about every detail.

@MhdGashi

Hello, I’m a Junior C#/.NET Developer focused on Windows desktop applications. My main practical project is SchoolSystem, built with C#, WinForms, SQL Server, and ADO.NET. I’m interested in your project and would like to discuss the required features before starting.