WhichCard is an AI-powered credit card recommendation tool that instantly tells you which card to use for a purchase. Type what you're about to buy — like “flight to tokyo”, “dinner in paris”, or “costco groceries” — and WhichCard recommends the best card from your wallet based on rewards, transfer partners, category bonuses, and foreign transaction fees. Unlike traditional credit card comparison sites, WhichCard is built for real spending decisions in the moment. Key features: - Instant card recommendations - Personalized wallet optimization - Travel and international spend support - Smart category detection - Real-time purchase scenarios - Planner mode for long-term rewards strategy Built for travelers, points enthusiasts, and anyone who wants to maximize rewards without doing the math manually.