Description: The ‘InstallReferrer’ in the context of mobile applications refers to a mechanism that allows tracking the source of application installations. This system is crucial for developers and marketing companies as it provides valuable information on how users discover and download applications. Through install referrer tracking, it is possible to identify the most effective advertising campaigns, the distribution channels that generate the most downloads, and user behavior after installation. This mechanism relies on the use of unique identifiers and tracking links that associate a specific installation with its origin. Additionally, install referrer tracking helps optimize user acquisition strategies, allowing developers to adjust their marketing efforts based on concrete data. In such a competitive ecosystem as mobile applications, having an accurate install referrer is essential to maximize return on investment and improve user experience.