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Auction Mobile App – Project Requirements We are seeking an experienced Flutter or Native mobile app developer to build a high-performance mobile application for Android and iOS, utilizing Firebase as the backend. The app will function as an auction platform with distinct buyer and seller roles, emphasizing seamless bidding mechanics, credit management, and user history tracking. Key Features: Language Settings: A settings panel allowing the client to change the app language (Arabic/English). Performance: The mobile application must handle up to 4,000 active bidding users simultaneously without lagging or crashing. User Modes: Buyer and seller accounts, with the ability to switch roles or operate in one primary mode. Product Posting: Sellers can upload and manage product listings with details, images, and descriptions. Bidding System: Buyers can place bids on products within a predefined time frame. Highest bid at the end wins. Winner sees a trophy animation, app corners turn green, and they must provide their location on Google Maps to receive an order number. Live Auction Display with Leaderboard: The app must display the number of users currently in the live auction and show a leaderboard reflecting their activity or standing. Credit-Based Bidding: Buyers must purchase credits in advance. Bid = amount +tax (15%), e.g., 50 = 57.5 credits. Credits are deducted upon bidding and refunded automatically if outbid. History Views: Buyers: Purchased products history. Sellers: Sold products with bidding leaderboard history. Each user: Personal bidding history. Admin Panel: Approve vendors. Send notifications & promo codes. Add other admins. View users' credits & ongoing orders. Add banners as advertisements on the top of the screen. Full system control. User behavior analysis (track engagement, most active users, bidding patterns, etc.). Additional Contract Terms: Source Code Ownership: Fully owned by the client Knowledge Transfer: The developer must teach the client how to access the database and source codes. No Extra Charges: The app must not cost the client more than the amount specified in the contract. Payment Terms: Payment will be sent through Freelancer after the client tests the app using a third-party agreed upon by both parties., the job must be done in 5 weeks at most(3rd, October)
Project ID: 39742492
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Active 8 mos ago
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124 freelancers are bidding on average $1,472 USD for this job

Hello , Nice to meet you! I will design and develop AUCTION mobile application with web admin panel according to your requirement , ping me on chat so we can discuss this more. I am expert and 9 years experienced Android /iPhone app developer with backend work that you are looking for. I will provide you perfect product as you want so you would be happy with it. I am always ready to discuss about your project in detail as well as start from right now. The following are my services that i provide :- 1. Daily or Weekly update. 2. Clean and Robust code. 3. Responsible for communication for more than 15 to 20 hours each day. 4. Free Bug-Fix support for 1 year after completion. 5. Source code delivery. You can have a look at my profile by this link : https://www.freelancer.com/u/shyamvijaywargiy Let's contact me to discuss further details with me. Thanks Shyam
$750 USD in 28 days
9.0
9.0

Hi I am a Native Mobile Application Developer and have done more than 500 projects as you can see my profile and reviews. I have some questions regarding the project to get started and will give you quote accordingly. Let’s discuss in detail and proceed further
$1,125 USD in 7 days
8.8
8.8

Hello, Your auction app requires a robust Flutter build with Firebase, demanding seamless bidding, credit management, and role-based access. This project excites me because of its complexity in handling concurrent users and features like live leaderboards and admin oversight. I’m Waqas from Eclairios, a professional software engineer with over 7 years of experience in app and web development. I have successfully completed 128 projects, earning a 5.0 rating from satisfied clients. I specialize in mobile apps (Android, iOS, Flutter), website development, custom APIs, and backend solutions. My goal is to deliver high-quality, scalable solutions that meet your business needs. Why hire me? ★ 100+ Projects Completed with 5-star rating. ★ 3 months of free post-launch support ★ Expertise in advanced technologies and systems Let’s connect and discuss how I can help you with your project. Best regards, Waqas
$1,016 USD in 7 days
8.4
8.4

As an experienced Flutter developer with a strong background in mobile application development, I understand the unique requirements of your project. You need a high-performance auction platform that can handle up to 4,000 active bidding users simultaneously without any lag or crashes. The app should have distinct buyer and seller roles, seamless bidding mechanics, credit management, and user history tracking. I have successfully developed similar projects in the past, particularly in the eCommerce and FinTech sectors. My expertise in building robust mobile applications, such as auction platforms, ensures that I can deliver a solution that meets your expectations and requirements. I will use my skills in Flutter and Firebase to create a responsive and user-friendly app that fulfills all the key features you have outlined. If you are ready to take your auction mobile app to the next level, I am here to help. Feel free to reach out to me to discuss your project further and take the first step towards bringing your vision to life.
$1,200 USD in 20 days
7.9
7.9

Hello, I will develop your AUCTION PLATFORM MOBILE APPLICATION for Android and IOS both platforms with Web admin panel. I am Tulsiram. I have 10 years of experience working as Native and Crossplatform mobile application developer. I am understood your requirements. I am glad if we are working together. If you interested then let's connect. I will provide you Daily updates ,source code after development completed, 1 Year maintenance Support in following Steps: I will available daily 10-12 hours in Working days for you. I will provide you regular updates according to which modules we will decided. After approval each module by you then i will provide your complete source code of your project and will shift on your Domain. Thanks
$750 USD in 25 days
6.5
6.5

Hello there Hope you are doing well as you are looking for a "Build a AUCTION MOBILE APPLICATION " so will make the same as you want , I have already develop and Design the so many Application , - I will use latest technology to develop your Application - I will share daily update with you - I Will deliver your project within timeline - After project completion will share complete source code - I will provide 1 year support our develop work - I have 10+ year experience in Web & App development - I will make the 100% responsive design , fast loading , SEO friendly and all - I will provide you super admin panel there you can manage the whole thing Please initiate the chat so will discuss together and all Thanks & Regards Dheeraj K.
$750 USD in 12 days
7.0
7.0

Hello I have read your requirements and I am sure I will be able to help you in Your Auction App. Please message me so that we will have detail technical discussion. I have 9+ years of combined experience in Mobile Application development, Website development, Desktop application development, 3rd party Artificial Intelligence api, AR/ VR, Chatbot, Blockchain- Cryptocurrency, CRM & ERP, Game Development and any other Software development. Please consider me and initiate a chat for further detailed discussion. Regards, Anju
$900 USD in 30 days
6.5
6.5

As an accomplished app developer with expertise in both Flutter and native, I am confident that I can deliver on all the requirements outlined for the Auction Mobile App. My extensive knowledge of Firebase for backend development ensures optimal performance and scalability. In fact, I've developed apps that have handled over 5,000 concurrent users with zero hiccups while maintaining smooth bidding mechanics – a crucial feature for your app's success. Operating within distinct buyer and seller roles? Not a problem. Over the years, I've designed user-friendly interfaces that offer seamless switching between roles while still ensuring primary mode efficiency. Additionally, the credit-based bidding system you're looking for aligns with my proficiency in incorporating complex financial logics into mobile apps. Another distinguishing factor is my experience in building robust admin panels with user behavior analytics – crucial for your client's marketing strategies and enhancing the overall app experience. To top it all off, I assure you exclusive ownership of the source code and thorough knowledge transfer to adeptly access database and source codes. As a dedicated professional, my job isn't complete until you are wholly satisfied – at no extra cost to your agreement!
$1,000 USD in 7 days
6.5
6.5

Hi, I can build a scalable, high-performance Flutter/Native auction app with seamless bidding, credit management, dual user roles, and a powerful Firebase-backed admin panel, ensuring smooth performance and timely delivery within your 5-week timeline. Can we discuss on chat. Regards Abhishek
$1,100 USD in 7 days
5.5
5.5

Hello, I went through your Auction Mobile App requirements and I must say this is an exciting project that surely fits my expertise. With strong experience in Flutter and Firebase, I can deliver a high-performance auction platform supporting 4,000+ live bidders smoothly. The app will include bilingual support (Arabic/English), seamless buyer/seller modes, product posting, real-time bidding with credit management, live leaderboard, Google Maps order tracking, and engaging animations like the trophy effect for winners. Sellers and buyers will have detailed history tracking, while the Admin Panel will provide full system control including approvals, credits management, notifications, banners, and behavior analytics. I also ensure clean code, full source code ownership, and proper knowledge transfer. The project will be delivered within your timeline of 5 weeks. Feel free to ping me for further discussion. Looking forward to collaborating. Best regards, Mayur
$1,500 USD in 30 days
4.8
4.8

What’s the deadline for the auction mobile app project? I can help you create a high-performance app for both Android and iOS using Flutter or native development. With extensive experience in mobile app development and Firebase integration, I can ensure a smooth bidding experience and effective credit management within the platform. During development, I’ll focus on user history tracking to enhance user engagement. I understand the importance of distinct roles for buyers and sellers and will design the app to maximize functionality and usability. Let’s discuss your vision in detail. I’m ready to start working on this exciting project. Regards, Atta
$1,500 USD in 30 days
4.6
4.6

Hi Mohammad, We’ve developed several large-scale Flutter apps with Firebase, including a multi-role auction app that handled 10,000+ users and integrated credit-based bidding. We also built a separate admin panel for managing vendors and sending promotional notifications. With 15 years of experience, I’ve worked extensively with PHP, Laravel, and JavaScript, leading teams and delivering successful products. I’m equally comfortable with backend development as I am with front-end work. Let’s schedule a 10-minute introductory call to discuss your project in more detail and see if I’m the right fit. I usually respond within 10 minutes. I’m eager to learn more about your exciting project. Best, Adil
$1,500 USD in 21 days
3.2
3.2

Hello, I am excited to submit a proposal for your Auction Mobile App development project. With over of experience in Flutter and mobile app development, I am confident in delivering a high-performance application that meets your specific requirements. The app will be designed for both Android and iOS platforms, leveraging Firebase for a reliable backend infrastructure. Key Features: - Language Settings for Arabic/English - Performance handling up to 4,000 active users simultaneously - User Modes: Buyer and seller accounts - Product Posting and Management - Bidding System with real-time updates - Live Auction Display & Leaderboard - Credit-Based Bidding System - History Views for buyers, sellers, and all users - Admin Panel with various management capabilities I would like to inquire about the specific design preferences you have for the app interface and any branding guidelines to follow. This information will help me tailor the user experience to align with your vision effectively. Looking forward to your insights on this. What are the primary color schemes or brand guidelines that should be considered for the app's interface design? I am confident in my ability to meet the 5-week deadline for this project. My bid amount is set within the specified budget range. Please let me know if you have any specific concerns or requirements that you'd like to discuss further. Thanks, Roshan
$1,200 USD in 35 days
0.0
0.0

Hello, I’d love to build your Auction Mobile App with a clean, high-performance Flutter solution powered by Firebase. I can ensure smooth handling of up to 4,000 live users, seamless buyer/seller role switching, secure credit-based bidding, and the engaging animations you’ve described. My focus will be on delivering a bug-free, fully documented system within your 5-week timeline. To clarify, do you have a preferred payment gateway in mind for the credit purchase system, or should I recommend the most reliable option? Let’s create an app that feels powerful, intuitive, and market-ready. Best Regards, Ziaul.
$750 USD in 7 days
0.1
0.1

Hello, I am a PHP Developer with 15+ years of experience, specializing in building dynamic, secure, and high-performance websites and applications. I have worked on simple to complex websites, e-commerce stores, membership portals, and custom PHP-based solutions, always ensuring top-quality results for my clients. My expertise includes custom PHP development, Laravel/CodeIgniter frameworks, API integration, database management (MySQL), and performance optimization. Recently, I also worked on OpenAI API integration for auto-generated content, images, and social sharing, showing my ability to adopt the latest technologies. If you are looking for a dedicated PHP expert who guarantees quality, innovation, and timely delivery, I’d be happy to bring your project to life.
$750 USD in 7 days
0.0
0.0

Hello! As per your project post, you’re looking to build a Auction Mobile App for both Android and iOS, supporting buyer and seller roles, real-time bidding, credit management, and user history tracking. I'M GLAD TO SAY THAT I HAVE ALREADY DEVELOPED AUCTION AP SO I HAVE EXPERIENCE IN THIS PROJECT. The goal is to deliver a stable, responsive platform capable of handling up to 4,000 active users simultaneously, with seamless live auctions and an engaging user experience. My focus will be on delivering a robust and scalable Flutter or native app. Core features can include: language settings (Arabic/English), dual user modes (buyer/seller), product posting with images and details, real-time credit-based bidding with automatic refunds for outbid users, live auction display with leaderboard, winner animations with location capture, and comprehensive history views for buyers and sellers. The admin panel will allow vendor approvals, notifications, promo codes, credit management, user analytics, and banner management for promotions. I specialize in Flutter and native Android/iOS development, Firebase backends, and real-time systems, with proven experience building auction and marketplace apps that manage high concurrent loads, handle in-app purchases/credits, and provide an intuitive, engaging user experience. Let’s connect and build a fast, engaging, and scalable auction app that delights buyers and sellers alike. Best regards, Nikita Gupta
$750 USD in 7 days
0.0
0.0

Hi, I trust you're good! We have 7+ years in the IT industry in which I have work on Mobile Applications for both iOS and Android platforms. With extensive experience in mobile app development and a strong track record of delivering high-quality applications Technical Skills: Mobile App Development: ReactNative, Hybrid, Flutter, Xamarin JavaScript Technologies: VueJS, AngularJS, ReactJS, NodeJS, MeteorJS. Database Management: SQL Databases (PostgreSQL, MySQL), APIs & Integrations: Google Maps API/Mapbox, QR/Barcode Libraries DevOps & Deployment: Docker/Kubernetes, CI/CD Tools (Jenkins, GitHub Actions) Below is our Sample work: ~LEAP FITNESS GROUP ~Fiskl - Mobile Invoicing App ~Agent Jack ~Inventory Unique ~Mentorship App - ~Drinkr App - ~Tipsy Tales App - Please let us know the best time available to discuss your project over chat. I am looking forward to hearing from you soon. Best Regards, Gayatri
$2,000 USD in 7 days
0.0
0.0

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