BillGuard's mission is to use data to save people money. American consumers lose over $14 billion a year to legal grey charges which result from misleading sales and billing practices. We developed advanced crowd-sourcing technology to collect and analyze billing dispute data from millions of consumers in order to extract patterns of fraud and "Grey Charges". We use these analytics to monitor our user's credit and debit card statements, alerting them to similar charges on their cards and helping them get their money back.