Gamma Wallet

Small shops lose regulars to big chains with slick loyalty apps, and paper stamp cards get lost. Gamma is a cardless loyalty platform for local businesses in Europe: cafés, bakeries, salons, shops. The business picks one of eight reward models (digital stamp card, levels, memberships, discounts, prepaid credit and more) in the Gamma Business app. At the counter, staff scan the customer's personal QR code: no new hardware, no change to the till. Customers keep every card from every shop in one free app, Gamma Wallet. What makes it different is Community Loyalty: rewards that grow as more customers take part, so a shop builds demand without discounting. Every reward is a digitally signed reward contract, a promise of value redeemable as credits at that shop. Credits are not money and not crypto, and Gamma never handles payments. How it's built: • API: .NET 10 / ASP.NET Core with MongoDB, contracts signed with BouncyCastle, Quartz for scheduled jobs • Mobile apps: Flutter (GetX), one for customers and one for businesses • Web: Angular for the website, the business CRM and the admin portal; Astro for the blog • Edge: Cloudflare Workers for the menu/price-list QR pages, a Python service on Cloud Run that rebuilds every uploaded PDF • Integrations: plugins for WooCommerce, PrestaShop, Odoo, OpenCart and Magento, plus an MCP server so Claude can run a shop's loyalty program for its owner Businesses can register and start on the free tier.