Built GARater, a responsive deck-building

Built GARater, a responsive deck-building and analytics platform for Grand Archive players.

I designed and shipped the product end to end—from the card API integration and interactive deck builder to multidimensional scoring, visual analytics, Google OAuth, cloud synchronization, and production deployment.

Built with JavaScript, Cloudflare Workers, D1, and REST APIs. The product reached approximately 1,180 unique visitors in its first 30 days.