Mobile app install tracking is a crucial metric for companies to assess the success of their marketing efforts by attributing downloads to specific campaigns, such as digital ads. However, measuring installs is challenging due to the fragmented nature of app stores and the complexity of user journeys, leading companies to rely on tracking partners. While knowing the number of installs is important for understanding user acquisition, it doesn't necessarily indicate an app's success unless paired with engagement metrics like retention and conversion rates. Increasingly costly digital advertising has heightened the importance of app install data, enabling teams to refine their marketing strategies and target ads more effectively. Examples from companies like Lemonade, Grabr, and Viber illustrate how effective tracking and analytics can drive user engagement and growth by optimizing user experiences and targeting specific markets. As a result, many teams use user analytics platforms to efficiently gather data from various app stores and advertising platforms, helping them to produce accessible reports and make informed decisions.