eSellify Buy Sell Marketplace Flutter App with Admin Panel | Classified Ads App like OLX, Quikr

eSellify is a complete, production-ready classified ads and buy-sell marketplace mobile application built with Flutter and Firebase. It works similarly to popular classified marketplace platforms — users can post ads to sell items, browse and search listings, filter by category and location, and communicate directly with sellers through real-time in-app chat. The full Flutter source code is included for both Android and iOS, along with detailed documentation to get your marketplace live quickly.

Whether you want to launch a local classifieds platform, a second-hand goods exchange, a used car marketplace, a real estate listing app, or any niche buy-and-sell community, eSellify gives you a solid, scalable foundation with a clean codebase and a modern UI.

Important Information About External Services

This application uses third-party services such as Firebase (Authentication, Firestore, Storage, Analytics), Google Maps API, and payment gateways. These services may require additional costs depending on your usage. Please review the pricing policies of these services before deployment.

Key Highlights

• Flutter cross-platform app (Android and iOS)
• Firebase backend with real-time database
• Real-time buyer and seller chat
• Advanced search and filter options
• Location-based listing system
• Wishlist and favorites feature
• Push notifications support
• Multi-language and RTL support
• Clean architecture using GetX

Feature List

• User registration with email, phone, and social login
• Ad posting with images, price, category, and location
• Edit, delete, and manage listings
• Real-time chat system
• User profile and dashboard
• Push notifications
• Subscription plans and monetization system

Subscription Monetization

eSellify includes a built-in subscription and monetization system that gives you full control over how users post and promote their ads on the platform.

• Ad Listing Plans: Restrict the number of ads a user can post based on their active subscription plan. Free users get a limited quota while premium subscribers can post unlimited or higher numbers of ads.
• Featured Ad Promotion: Users can purchase featured ad slots to boost their listing to the top of search results and category pages, increasing visibility and faster selling.
• Subscription plans managed from the Admin Panel
• Plan duration control — daily, weekly, monthly, or custom periods
• Separate plans for ad listing quota and featured ad promotion
• Users can view, upgrade, and manage their active plan from the app
• Payment gateway integration for plan purchases

Technology Stack

• Flutter (Dart)
• Firebase Firestore
• Firebase Authentication
• Firebase Cloud Messaging
• Firebase Analytics
• Google Maps API

Use Cases

• Local classifieds and general ads platform
• Used car and vehicle marketplace
• Second-hand electronics buying and selling app
• Real estate and property listing app
• Fashion resale and thrift store marketplace
• Jobs and freelance opportunity board
• Student textbook and notes marketplace
• Furniture and home goods exchange platform
• Any niche buy-sell community app