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Project Overview & Budget The project involves modifying the payment systems, completely revamping the user interface, and developing a companion website that mirrors the application's features. Budget: $250 - $750 (Strict & Non-negotiable) Please only apply if you are fully committed to completing the project within this exact budget range to avoid wasting time. Key Responsibilities: Web Development (Companion Website): Build a fully functional, responsive website based on the mobile app, ensuring seamless synchronization with the existing backend database and core features. Payment Integration & Fee Automation: Upgrade the current payment gateway integration and automate the logic for calculating, processing, and distributing payment fees, transactions, and commissions. UI/UX Redesign & Enhancements: Modernize the platform's design to improve the overall user experience, making the interface more intuitive, modern, and visually appealing. Dynamic City-Based Pricing: Implement a system where service prices vary and are automatically calculated based on the specific city. WhatsApp & Supabase Integration: Connect a WhatsApp account directly with the Supabase backend to streamline customer service operations. Bug Fixing & Security: Audit the platform to fix existing bugs, repair glitches, and patch any security vulnerabilities.
Project ID: 40684339
393 proposals
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Active 23 hours ago
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393 freelancers are bidding on average $427 USD for this job

Drawing on our decade-long experience in web design and development، our team at 360 Elevate is ideally positioned to execute a project of the scope and complexity of your app overhaul. Not only are we well-versed in working within strict budgets, our expertise spans all the key areas you need help with: web development, payment integration, UI/UX redesign, city-based pricing automation, WhatsApp and Supabase integration, bug fixing, and security. Our proficiency in working with WordPress, WooCommerce, Shopify, Wix, Webflow, Squarespace, and a vast array of full-stack frameworks including AI and automation allows us to devise the best solutions for your unique requirements. We have built ERP, HRM and CRM systems that resemble what we envision for your app and sophisticated payment-enabled automation systems that mirror your need for efficient fee calculation and transaction processing. One differentiating aspect of what we deliver at 360 Elevate is our commitment to quality assurance. We systematically audit our work and conduct rigorous testing to address bugs and security vulnerabilities before they hamper your user's experience. Our design aesthetic prioritizes intuitive functionality within an appealing visual framework as exemplified by the ageless work on our client's websites. So let us transform your app into something more modern and user-friendly while simplifying customer support through Whatsapp-Supabase connectivity - all well within budget!
$250 USD in 7 days
9.8
9.8

Hello, I am Dr. Rajesh Rolen, PhD in Computer Science & Engineering, with experience of over 20+ years in PHP, Web Development, Website Design, HTML, Graphic Design 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
$500 USD in 10 days
9.4
9.4

Hello, I'm Elias, a Miami-based senior software engineer with 20 years of experience in web development and payment processing systems. I’ve carefully reviewed your project on overhauling the UI/UX and payment systems. Your main goal seems to be enhancing user experience while ensuring a seamless payment process. I’ve built similar systems before, focusing on secure architecture, responsive UI, and maintainability. My approach would involve: 1) Understanding the current workflows and technical requirements 2) Designing an intuitive user experience and robust architecture 3) Developing the revamped payment features and integrations 4) Conducting thorough testing to ensure everything works smoothly 5) Deploying the solution and providing ongoing support. Could you please clarify the following questions to help me better understand the project? 1) What specific payment methods do you want to integrate, and are there compliance requirements? 2) How do you envision the user journey through the updated app, especially during payment? 3) Are there any existing system limitations or edge cases that need addressing? I have experience with similar projects, but most were under NDA, so I can’t share them. However, I’d be happy to discuss my previous work. Additionally, I can ensure a scalable architecture that adapts to future needs.
$600 USD in 5 days
8.7
8.7

Hello, As a seasoned developer with a broad skill set encompassing HTML, PHP and Website Design, I'm confident I can meet and exceed your project's objectives within the $250-$750 budget range. My firm, A4Logic, has successfully delivered high-quality web and mobile solutions for over 15 years across various industries. Demonstrating strong adaptability to new platforms, I can revamp your payment systems while automating fee calculations and integrating efficient third-party services such as WhatsApp and Supabase to enhance operational dynamics. Additionally, my expertise in UI/UX redesigning coupled with a keen eye for detail will ensure that your app receives not just a facelift but an optimized user experience. I will create an intuitive, modern interface that resonates with your target users. Moreover, I can effectively implement dynamic city-based pricing and perform a thorough security audit to assure the integrity of the platform. Importantly, my proficiency with REST APIs and third-party integrations levies a direct impact on the backend efficacy of the application, which is pivotal for successful integration with the web companion site; ensuring seamless functionality as well as database harmonization between both platforms. You can rely on me to complete these tasks effectively and efficiently within the given budget. To sum it up: my extensive experience in full-scale development projects, commitment to quality code an Thanks!
$450 USD in 6 days
8.6
8.6

Hello, A2 Design can help overhaul your app by improving the UI/UX, upgrading payment and commission logic, adding city-based pricing, building a responsive companion website, connecting WhatsApp with Supabase, and auditing bugs/security issues. Given the fixed $250–$750 budget, we’d recommend starting with a clear technical review and prioritizing the highest-impact items for delivery within scope. We have strong experience with platforms involving payments, bookings, pricing rules, and user-focused interfaces. For example, MadPaws includes booking flows, sitter search, escrow payments, profiles, and filtering: madpaws.com.au. GetBlys is a service-booking platform with secure payments and scheduling: getblys.com.au. TutorTime also demonstrates dynamic pricing, profiles, notifications, and marketplace logic: sophiesparkseducation.com. Founded in 2006, A2 Design provides full-cycle web and mobile development using Laravel, React.js, Vue.js, React Native, and related technologies. Let’s connect to review your current app, confirm the backend/payment setup, and define the best delivery plan within your budget.
$420 USD in 4 days
8.9
8.9

With extensive experience in web development and payment integration, I understand the need to revamp the payment systems, UI, and companion website for seamless user experience. How can I best ensure the dynamic city-based pricing aligns with user expectations and operational efficiency? Regards, Yogesh Kumar
$370 USD in 9 days
8.5
8.5

Hi there, I can see the real pressure here: the app needs to feel unified, trustworthy, and operationally clean across UI, payments, and the companion website. I’ve handled similar PHP/MySQL, API, payment, and responsive web builds, so I can help stabilize the backend sync, refine the UX, and implement the city-based pricing and fee automation without breaking existing flows. I’ll start by mapping the current app/database structure, payment logic, and Supabase/WhatsApp touchpoints, then rebuild the companion site to mirror the app’s core features and fix the bugs and security gaps along the way. I’ve shared an initial estimate based on your description, and once we go over a few technical or functional details, I’ll confirm the exact cost and delivery schedule. Could you share which payment gateway is currently in place, and whether the WhatsApp integration should use an API provider or direct business account setup? Also, do you already have the city-price rules defined, or should I help structure them from the backend side? Looking forward to your reply so we can finalize the exact plan. Best regards, Asad
$250 USD in 10 days
8.3
8.3

Hi, I went through the requirements and understand you need both development and improvements to the existing platform — a responsive companion website, payment/commission automation, UI/UX updates, city-based pricing, WhatsApp + Supabase integration, and bug/security fixes. I’m comfortable working within the strict $250–$750 budget and won’t propose a different budget. I can first review the existing app, backend/database structure and current payment setup, then plan the work around the most important features so everything stays within the agreed scope. I’ll make sure the website works properly across mobile and desktop, the payment and fee logic is reliable, city-based pricing is handled dynamically, and the existing backend remains synchronized. I can also review the current code for bugs and obvious security issues and fix them as part of the project. Please share the existing app/website details and current tech stack so I can review the setup and confirm the best approach.
$500 USD in 7 days
8.5
8.5

⭐⭐Hi⭐⭐ With over seven years of experience in graphic design, web development, and website design, I believe I have the essential skills and expertise to undertake your comprehensive app overhaul project. From giving your payment systems a much-needed upgrade to automating fee calculations, I’m confident in my ability to boost the efficiency of your app's backend processes. Expect seamless functionality, user-friendly interfaces, and modern designs that will improve overall user experience. In addition to revamping the app UI/UX with creativity and modernism, my proficiency extends to building responsive companion websites that synchronize effortlessly with existing databases. On top of technical skills crucial to the project like HTML, PHP, and Web Development, my abilities also encompass necessary tools like Photoshop, Illustrator, Figma which are vital for a coherent redesign of your app. Moreover, costing dynamics is no problem as I can integrate a dynamic city-based pricing system for you. As a bonus, since security is always onboard with my projects, I will carefully audit your platform to rectify any bug breaches and fix other glitches or security vulnerabilities that currently exist. As your partner on this transformative journey brewing success for your app and brand overall - we'll make a great team! Let’s build an efficient interface together! Available for further discussion anytime! Thank you ⭐⭐Nupur ⭐⭐
$250 USD in 7 days
8.3
8.3

Hello, A successful app overhaul here requires more than visual updates: the companion website, PHP architecture, payment processing, city-based pricing, Supabase connectivity, and UI/UX improvements must work as one reliable system. I can help redesign the experience while organizing the responsive web interface around the existing application and backend, then address fee automation, transaction logic, security issues, and the visual consistency expected from professional Graphic Design. I will begin by reviewing the current app, database structure, payment flow, and priority bugs, then deliver the work in focused milestones within your fixed budget. Which payment gateway, PHP framework, and Supabase schema currently power the app, and what must be completed first within the fixed budget? Best regards, Sahil
$250 USD in 1 day
8.4
8.4

Hi, I can handle the full scope within your **$250–$750 fixed budget**. I’ll build the responsive companion website synced with your existing backend, upgrade the payment/commission logic, redesign the UI/UX, implement city-based pricing, integrate WhatsApp with Supabase, and address bugs and security issues. I’ll first review the existing app, backend, and payment setup to understand the architecture and provide a clear implementation plan. I’m committed to working within your stated budget and can start immediately. Best regards, Muhammad Rizwan LA
$250 USD in 3 days
8.3
8.3

Hi, I can help upgrade the existing platform and build the companion website within your $250–$750 fixed budget. I understand the scope includes the responsive web version, payment and commission automation, modern UI/UX, city-based pricing, WhatsApp–Supabase integration, and fixing existing bugs/security issues. I’ll first review the current application, backend structure, database, and payment flow, then implement the required changes without disrupting the existing functionality. I have 10+ years of web development experience and can handle the project with a focus on clean implementation, reliable payment logic, responsive UI, and secure backend integration. Budget: $750 Timeline: 14 days Thank you Regards, Sai
$260 USD in 10 days
7.8
7.8

This project needs a coordinated overhaul rather than isolated UI changes: a responsive companion website, reliable payment and commission automation, city-based pricing, WhatsApp-to-Supabase workflows, and a security-focused bug audit. I’ll first map the existing app, database schema, authentication, and payment flow so the website mirrors the current features without duplicating business logic. I’ll build the web layer with PHP/HTML or the existing stack, using Supabase APIs and shared validation for consistent app and website behavior. Payment webhooks will be made idempotent, with clear transaction, fee, commission, and payout records, while city pricing will use a maintainable configuration model. I’ll also modernize the key screens for mobile responsiveness and simpler user journeys, then test edge cases such as failed payments, duplicate callbacks, incorrect city data, and unauthorized access. My experience includes ClearAgent, a live end-to-end operational SaaS, and DeskLeap with a public REST API, both requiring dependable workflows and integrations. Is the existing app already connected to Supabase, or should that connection setup be included? Muhammad Saad
$250 USD in 6 days
7.9
7.9

Hi, I'm interested in your app overhaul. I will redesign your UI, build the companion website, and automate your payment fees using Supabase for efficient operations. I accept the project budget. Let’s discuss and get started! -AJ
$500 USD in 7 days
7.8
7.8

Howdy, When an existing app is already handling users, payments, and business workflows, the biggest risk is making changes that quietly break what already works. I’ve reviewed the requirements, and I’d approach this by keeping the existing app and new website connected through the same Supabase backend so users, data, and core functionality remain synchronized. I can work within the stated $250 to $750 fixed budget and focus on the highest priority items: payment and commission logic, city based pricing, responsive web experience, UI improvements, WhatsApp integration, and targeted bug and security fixes. I’d first review the existing application and backend so the work can be scoped properly within the fixed budget before making changes. One important point I’d clarify upfront is which payment gateway and commission rules are currently in place, since that will determine the effort required for the payment changes. Portfolio: https://www.freelancer.com/u/Hammadhassan21 Best regards, Hammad Hassan
$300 USD in 7 days
7.9
7.9

With over a decade of experience in web development and design, I'm confident of delivering an exceptional job on your project within budget. I'm adept with HTML, PHP, and fluent in programming languages ensuring smooth website and backend integration. My portfolio includes WordPress, Shopify, WooCommerce, and custom-coded websites. I can build a functional companion website for your mobile application. Given your project's need for comprehensive UI/UX revamp, my graphic design skills provide the modernized interface your app deserves. I have significantly improved user experience in past projects through intuitive designs. My understanding of dynamic pricing systems and platform integration enables me to handle automated payment logic and integrate Supabase with WhatsApp. I ensure your platform is bug-free and secure. I offer ongoing support even after project completion, so future issues or updates won't be a concern. Together, let's turn your vision into an extraordinary reality.
$250 USD in 7 days
8.1
8.1

Hi I can overhaul your app and payment web development with a modern, responsive interface, improved user flow, secure payment integration, optimized performance, and reliable functionality, ensuring a smooth experience from navigation through checkout. Kundan
$250 USD in 3 days
7.5
7.5

Hello, As an accomplished digital solutions provider with over a decade of experience, WellSpring Infotech is your strategic partner for this project. Our proficient team has a wide range of skills to accomplish each aspect of your project. We excel in web development, a skill that will be crucial in creating a fully-functional companion website that harmonizes with your mobile app's features effortlessly. Additionally, our expertise in payment processing will enable us to upgrade your current system, enabling seamless fee automation and providing secure and optimized transactions. The core of our mission at WellSpring Infotech is providing modern, responsive, and user-friendly designs - precisely what you need for your app overhaul. Our track record demonstrates our ability to enhance UI/UX experiences and our compatibility with platforms like Wordpress, WooCommerce, Magento, and Joomla will prove pivotal in efficiently meeting your project needs. We are also skilled in graphic design; meaning we can add sophisticated visual appeal to customize the dynamic city-based pricing implementation you desire. What sets us apart at WellSpring Infotech is not only the depth of our technical proficiency but our unwavering commitment to client satisfaction. We prioritize transparency and consistent communication ensuring we understand your unique needs through every step of the process. Thank you
$500 USD in 10 days
8.0
8.0

HEY ! I UNDERSTAND YOU NEED TO ENHANCE AN EXISTING PLATFORM WITH A COMPANION WEBSITE, PAYMENT/COMMISSION AUTOMATION, UI/UX REDESIGN, CITY-BASED PRICING, WHATSAPP + SUPABASE INTEGRATION, AND SECURITY FIXES. I have 12+ years of experience with React, Flutter, Supabase, payment gateways, WhatsApp APIs and backend integrations. I can deliver: • Responsive web app synced with your existing backend • Payment, fees & commission automation • Modern UI/UX improvements • Dynamic city-based pricing • WhatsApp + Supabase integration • Bug fixing, security audit and optimization FLOW: Audit → UI/UX → Integrations → Pricing/Payments → Testing → Deployment Ready to review the existing app/backend and start immediately. THANKS CHRISTINA
$250 USD in 7 days
7.8
7.8

Hi, I can handle the UI/UX revamp, companion responsive website, payment and commission automation, city-based pricing, WhatsApp/Supabase integration, and bug/security fixes. I'll ensure the website stays synchronized with your existing backend and deliver a clean, reliable solution within your fixed $250–$750 budget. Best regards, Ihtsham
$250 USD in 1 day
7.3
7.3

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