Flutter-Based Price Comparison App & Backend

@rajat07me

A price comparison app only looks simple on the surface; the real challenge is keeping search fast, showing cheapest vs nearest results cleanly, and structuring the backend so later data-source changes do not force a rebuild. I’d approach this by defining the data model and API contract early, then building the Flutter app around stable search, sorting, cart flow, and store-detail modules. I’ve worked on custom app/backend builds where performance, clean milestone delivery, and source-code handover mattered more than flashy screens. For this kind of project, the important part is not just Flutter UI work, but making sure filtering, location-based sorting, and backend integration stay maintainable as your full comparison logic is finalized. A small plus from my end is I can structure milestones around usable feature blocks so each GitHub delivery is meaningful. - Will the first release use live store feeds/APIs, or should the backend also include an admin/import system for price data? - Do you already have wireframes for the search/results flow, or should UI/UX for those screens be handled as part of the build? - Should the cart support checkout, or is it mainly a saved comparison basket for now?

@Microlent

Hello, I am Dr. Rajesh Rolen, PhD in Computer Science & Engineering, with experience of over 20+ years in Android, API Integration, Flutter, Mobile App Development, PHP, iPhone, Backend Development, Dart 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

@AwaisChaudhry

Hello, Your price-comparison app requires a fast cross-platform experience with reliable product search, store-based pricing, and clear Cheapest/Nearest switching. I can build the Android and iPhone experience in Flutter, connecting it to a structured PHP backend/API as the data-collection approach is finalized under NDA. I’ll organize the work into milestone-ready modules: search and filtering, price comparison logic, location-based sorting, store profiles with hours and map-ready location data, cart functionality, API integration, and production testing. The architecture will keep pricing and inventory responses flexible so the undisclosed collection mechanism can be incorporated without rebuilding the mobile app. Each milestone can include tested source code committed directly to your GitHub account, with clear documentation and handoff. I’ll also prioritize performance, pagination, error handling, and a maintainable codebase suitable for the planned 5-6 month delivery. Will the backend receive standardized store/product feeds, or must it collect and normalize pricing data from multiple sources? I’m ready to review the NDA and detailed data/API requirements before defining the milestone plan. Regards, Muhammad Awais

@irsolutions

With over a decade of experience in full-stack architecture and high-scale systems, I understand your need for a professional Flutter developer to create a mobile Price Comparison App for both Android and iOS platforms. My background in building high-performance solutions, including serving over 1 million users, directly applies to the complexity of your project goal. For strategic insight, I recommend implementing a robust caching mechanism to ensure fast search results and seamless user experience. With my past success in developing apps for high-user engagement, I am confident in delivering a scalable and secure solution for your price comparison app. I encourage you to reach out to discuss the roadmap for your project and how we can work together to bring your vision to life. Let's connect to further explore how I can contribute to the success of your Flutter-Based Price Comparison App.

@installerpoint

Good Day! I have carefully analyzed your project and can build a fast, scalable Flutter app for Android and iOS with product search, Cheapest/Nearest result views, shopping cart, store details, location-based sorting, and seamless backend/API integration. I’m comfortable working under NDA with milestone-based delivery and will provide clean, maintainable source code to your GitHub after each milestone, with the 5–6 month timeline structured around clear development phases. I can also share relevant marketplace/price-comparison experience and portfolio in chat. 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.

@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 price comparison 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

@Hammadhassan21

Howdy, The real challenge here is making product search and price comparison feel fast and simple even when data comes from multiple stores and locations. I can build the Flutter app around a shared result structure so the Cheapest and Nearest views stay consistent while keeping the backend flexible until the data collection method is disclosed under NDA. I can handle the Android and iOS app, product search, comparison views, cart, store details and API integration, with clean source delivered to your GitHub throughout the milestones. I’ll also keep the architecture flexible so the price data layer can evolve without requiring major changes to the mobile UI. I can share relevant marketplace and mobile app work in chat and discuss the backend approach once the NDA is in place. Portfolio: https://www.freelancer.com/u/Hammadhassan21 Best regards, Hammad Hassan

@ranjika08

The risky part in your app is not the screen count, it’s how the comparison logic, nearest-store calculation, and future backend rules are planned before development moves too far. I’d break it into clear milestones: search and result architecture first, then cart/store pages, then backend connection and refinements, so each phase is testable and easy to review in your GitHub. I’ve been involved in marketplace-style and custom data-driven builds where users expect speed and clarity, not clutter. That matters here because if search, sorting, and location handling are not planned properly from day one, these apps become slow and expensive to adjust later when the API details expand. I can also keep the structure straightforward so future updates are easier for your team to continue if needed. - Will nearest results be based on device GPS only, or should users also be able to enter a manual location/postcode? - Is user login part of phase one, or can the first version work without accounts? - For the backend, are you expecting us to build it from scratch as well, or integrate with an existing service once NDA details are shared?

@ZohaibRoy

⭐⭐⭐⭐⭐ Create a Mobile App for Price Comparison Using Flutter ❇️ Hi My Friend, I hope you are doing well. I've reviewed your project requirements and see you are looking for a Flutter developer to build a price comparison app. You have no need to look any further; Zohaib is here to help you! My team has completed 50+ similar projects for mobile applications. I will create a user-friendly app that allows users to search for products, compare prices, and view results sorted by the lowest price or nearest location. ➡️ Why Me? I can easily develop your price comparison app as I have 5 years of experience in Flutter development, focusing on mobile applications, API integration, and user interface design. Not only this, but I also have a strong grip on backend development and database management, ensuring a smooth and efficient app. ➡️ Let's have a quick chat to discuss your project in detail and let me show you samples of my previous work. Looking forward to discussing this with you in chat. ➡️ Skills & Experience: ✅ Flutter Development ✅ Mobile App Development ✅ Backend Integration ✅ API Development ✅ User Interface Design ✅ Database Management ✅ Agile Methodology ✅ Version Control (Git) ✅ Testing & Debugging ✅ Performance Optimization ✅ User Experience Design ✅ Cross-Platform Development Waiting for your response! Best Regards, Zohaib

@DrSyafiq

This is a strong fit, and I’d start with the highest-risk workflow first. For a Flutter-Based Price Comparison App & Backend, the key is not just the screens but keeping the API and platform-specific behavior stable across devices. My approach would be to first define the integration contracts and backend boundaries, then deliver the first milestone around the riskiest data flow instead of only UI screens. Quick question: Do you already have a preferred OTP provider and retry/fraud policy, or should that be designed with the delivery? Also, which external integrations are absolutely required for MVP, and which can be staged after launch? Best, Dr. Syafiq

@c0909h1179

Price comparison stands or falls on how fast the "Cheapest vs Nearest" ranking returns — that means geo-indexed queries, cached price snapshots, and a Flutter UI that swaps sorted lists without refetching. I've shipped 80+ apps since 2008, including Flutter/React Native marketplace apps and Node/PostgreSQL backends with Redis caching and admin dashboards with RBAC for managing stores and price feeds. Approach: (1) sign the NDA, then map the price-collection mechanism into a normalized product/store/price schema with PostGIS distance search; (2) build the API plus Flutter app — search, dual sorted lists, cart, store detail; (3) deliver per milestone to your GitHub with TestFlight/Play internal builds for review. How often does the price data refresh — real-time scraping or scheduled imports?

@consus

Hello Sir It could be done with in 30 days , we can give you the free mockup please share your requirement details i will give you more appropriate quote. Waiting for your reply Regards Adnan Consus Solutions

@avinashjain09

Hello, What kind of product comparison you want, a product that is available on various ecommerce websites or something else. I am ready to sign the NDA so you can share the complete requirement details, I can review it , ask you the relevant questions and share the price and cost for it. I have 4 years of experience in flutter, 8 years of experience in mobile app development and 14 years of experience in backend or APIs. Once you say okay I am ready to start the work. Can we have more discussion to discuss the scope of work. Regards Avinash

@mrresearcher99

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

@Hubready

Hello!, I am a US-based full stack/mobile developer with around 10 years of experience building Flutter apps, marketplace platforms, price comparison tools, backend APIs, product search, location-based results, shopping carts, and scalable mobile architectures. I read your project description carefully and understand the goal: build a clean Flutter app for iOS and Android where users can search products, compare prices by cheapest or nearest store, view store details, and manage a simple cart, while keeping the backend flexible for the price-data collection mechanism after NDA. For this build, I’d recommend Flutter with a Node.js/NestJS or Laravel backend, PostgreSQL, REST APIs, secure auth, location-based sorting, cached search results, and milestone-based GitHub delivery after each approved phase. Relevant work includes: Marketplace app with product search and store listings - Price comparison dashboard with filter/sort logic - Flutter shopping cart app connected to backend API - Location-based service app with nearest-result rankng Could you please clarify the following questions to help me better understand the project? 1. Will price data come from store APIs, manual uploads, scraping, or a partner feed? 2. Should users be able to purchase through the cart, or is it only for comparison/saved items? 3. Do you need user accounts and saved favorite stores/products in the first version? Regards, James Zappi

@vishal1145

Your app will fail user retention if the price-data refresh logic isn't architected upfront. Most comparison apps die because they show stale prices or can't handle concurrent API calls from multiple store backends without timeout errors. Quick questions - what's your data ingestion strategy (web scraping, store APIs, or manual feeds)? And are you planning real-time price updates or scheduled batch syncs? Here is the architectural approach: - FLUTTER + DART: Build native iOS/Android UI with BLoC state management to handle asynchronous price fetching without UI freezes. - API INTEGRATION: Design RESTful backend with rate-limiting middleware and caching layer (Redis) to prevent store API throttling during peak traffic. - BACKEND DEVELOPMENT (PHP): Implement queue-based price aggregation service that normalizes data from multiple sources and indexes by geolocation for sub-200ms nearest-store queries. I've built 2 marketplace apps that processed 10K+ product comparisons daily without performance degradation. Let's schedule a 20-minute call to align on your NDA terms and milestone structure before you commit to a 6-month build.

@sufyanasmat38

Hello, I have strong experience with Flutter, Dart, REST APIs, backend development, location services, search, and marketplace platforms. I can build your Android and iOS price comparison app with fast product search, Cheapest and Nearest views, shopping cart, store details, and reliable API integration. I’ll keep the architecture scalable so the price-data collection mechanism and future features can be integrated cleanly after the NDA. I can work milestone by milestone with full source code committed to your GitHub and would be happy to share relevant marketplace or comparison app work.

@flapjakc

Hi, Mateo here, from Toronto. Cheapest and Nearest sorted results only feel trustworthy if both calculations run off the same live price and location data, not two separate queries that can drift out of sync, so I'd structure the backend around one product/price dataset that both sort modes read from directly, that consistency matters more here than either sort algorithm on its own. I'd build the app in Flutter for one codebase across iOS and Android, a clean search interface with the switchable Cheapest/Nearest views, store detail pages, and a simple cart, connecting to whatever backend architecture the full spec defines once shared under NDA. Given the 5-6 month scope and milestone-based GitHub delivery you've outlined, I'd want the first milestone to prove out the core search, results, and cart flow against sample data before the price-collection mechanism gets layered in. Looking forward to working with you.

@ciss26

Hello there, Hope you are doing well I’m interested in developing your Flutter-based price comparison app for both Android and iOS, along with the backend/API integration. I understand that the detailed price-data collection mechanism will be shared after the NDA, and I’m comfortable working within that confidentiality process. I can build a fast, intuitive experience with: Simple and responsive product search Product results with Cheapest / Nearest switching Price comparison across multiple stores Store detail pages with name, location and working hours Basic shopping cart functionality Location-based store distance calculations Backend/API integration Proper loading, error and empty states Secure user/session handling where required Scalable architecture for future features Recommended Technology Mobile: Flutter + Dart Backend: Node.js + NestJS Database: PostgreSQL/PostGIS API: REST/JSON Maps & Location: Google Maps Platform Caching: Redis where appropriate Cloud: AWS Source Control: GitHub Thanks & Regards Dheeraj K.