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