Appsflyer is a mobile attribution and marketing analytics platform that helps businesses track the performance of their mobile apps. It provides insights into user acquisition, engagement, and retention, allowing marketers to understand which campaigns are effective in driving app installs and user interactions. The platform integrates with various advertising networks and tools, enabling businesses to optimize their marketing strategies. By analyzing data from different sources, Appsflyer helps companies make informed decisions to improve their return on investment (ROI) and enhance user experiences within their apps.