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App Annie data.ai (formerly App Annie) is the leading mobile data and analytics platform, rebranded in 2022. Provides app market data, competitive intelligence, and advertising analytics. Used by 90% of top 100 app publishers. Appsee Appsee enables mobile app publishers and developers to track, understand and improve the user experience in their apps, and act on insights delivered by the SaaS platform. Countly Countly is an open-source, privacy-focused product analytics platform for web, mobile, and desktop. Can be self-hosted for full data ownership. Offers event tracking, retention analysis, crash reporting, and A/B testing. Crazy Egg Crazy Egg is a website optimization platform offering heatmaps, scrollmaps, click tracking, session recordings, A/B testing, and surveys. Used by 300,000+ websites to identify friction and optimize conversions. Google Analytics 4 Google Analytics 4 (GA4) is Google's latest analytics platform that replaced Universal Analytics in July 2023. GA4 uses an event-based data model, supports cross-platform tracking (web + app), and offers privacy-friendly cookieless measurement, predictive metrics, and deep integration with Google Ads and BigQuery. Free for most users. Essential for understanding website and app user behavior. Google Anlaytics Google Analytics 4 (GA4) is Google's latest analytics platform, replacing Universal Analytics in July 2023. Uses an event-based model, supports cross-platform tracking, and integrates with Google Ads and BigQuery.