Flurry is a free, professional-grade mobile app analytics platform owned by Yahoo that provides comprehensive insights into user behavior, app performance, and audience demographics for iOS and Android applications. The platform offers automatic data collection with minimal SDK integration, providing out-of-the-box metrics for sessions, retention, crashes, and user engagement without requiring extensive setup or custom event tracking. Flurry provides advanced analytics features including funnel analysis, cohort reports, custom dashboards, retention analysis, and real-time metrics that help developers understand app performance and user behavior patterns. Key capabilities include demographic insights with age and gender estimation, geographic analysis, custom event tracking, and Explorer tools for on-demand analysis of user segments and behavioral patterns. The platform offers crash analytics for identifying and resolving technical issues, user acquisition analytics for understanding traffic sources, and retention reporting to measure long-term user engagement. Flurry's completely free model with no data hostage policies makes it accessible to independent developers and startups, while its enterprise-grade infrastructure can scale to handle apps of any size. The platform is particularly valuable for mobile app developers and product teams who need comprehensive analytics capabilities without the cost constraints of paid solutions.