ReviewScan is a SaaS platform created for e-commerce brands and marketplace sellers operating on Amazon, Shopify, eBay, and Walmart. Our team developed a referral campaign engine that generates promotional links and printable QR codes with incentives such as gift cards, lifetime warranties, discounts, and exclusive content. The platform guides satisfied buyers toward verified reviews while routing complaints into a private resolution workflow, helping brands protect their reputation. It includes campaign management, incentive configuration, high-resolution QR code generation and PNG downloads, performance analytics, and a polished dark-mode interface. The solution automated post-purchase engagement and helped increase verified positive reviews and sales performance.