Swap Smart: Tabadol, Your Product Exchange App.
About the Client
Tabadol is a UAE-based startup with a mission to promote sustainability and reduce consumer waste by enabling people to exchange goods and products within their community. Rather than buying or discarding items, users can list, browse, and swap products in categories like electronics, books, furniture, kids’ toys, and more. The client approached Royex Technologies to build a mobile-first platform that is simple, secure, and encourages trust-based transactions in a vibrant community setting.
Project Goals & Objectives
- Design and develop a mobile app to enable peer-to-peer product exchange
- Build intuitive user flows for listing, browsing, messaging, and bartering
- Allow real-time chat and negotiation between users
- Implement geolocation to find nearby items and exchanges
- Ensure moderation features to report or block inappropriate listings
- Support bilingual experience (English and Arabic)
- Include a user rating and reputation system
Challenges Faced
- Needed a frictionless and secure way to initiate exchanges without payment
- Designing fair bartering mechanics for two-way or multi-item swaps
- Building user trust in a system without financial transactions
- Required strong backend moderation and spam prevention
- Needed real-time chat and notification system for instant interactions
Our Solution
Royex Technologies developed a Flutter-based mobile application for Android and iOS, paired with a secure ASP.NET Core backend. We built a clean and intuitive interface where users can create listings, mark items as available/unavailable, and propose exchanges.
A smart match engine suggests relevant swap options based on location, category, and user preferences. The in-app chat supports real-time communication, and we implemented a dual feedback/rating system to increase transparency. Admin controls were added for content moderation and user verification.
Technology Stack Used
- Mobile App: Flutter
- Backend: ASP.NET Core
- Database: Microsoft SQL Server
- Notifications: Firebase Cloud Messaging
- Location Services: Google Maps API
- Hosting: Microsoft Azure
- Security: SSL, OTP login, content moderation tools
Key Features Delivered
🔹 User Features
- Simple product listing with photos, descriptions, and condition tags
- Browse nearby items using location filters
- Propose and accept exchanges or counteroffers
- In-app chat and exchange tracking
- Ratings & reviews for both parties
- Multi-language interface (English/Arabic)
🔹 Community & Moderation Features
- Report or block users/items
- Admin panel for content moderation and user management
- Verified user system to enhance trust
- Push notifications for offers, chats, and listing updates
🔹 Exchange Logic
- One-to-one or multi-item barter option
- Smart suggestions for matching items
- Item availability toggle and exchange history
Results & Impact
- Over 8,000 products listed in the first 3 months
- 3,000+ successful swaps with positive feedback
- Built a growing community of eco-conscious users
- 4.8★ app rating across platforms
- Recognized by local sustainability groups for promoting circular economy