Rewardini is a loyalty platform for local and online shops. Customers keep every shop's card in one app and show one QR at the counter; merchants run stamps, points, rewards, challenges and VIP cards from a web dashboard. I designed and built it end to end: a React Native app for customers and counter staff (QR and NFC stamping, offline QR, map, push), a React dashboard (insights with AI suggestions, multi-branch, team roles, billing) and a NestJS + PostgreSQL API with real-time updates and Shopify / WooCommerce sync. In English, French and Arabic (RTL).