AppsFlyer is one of the most popular tracking tools for mobile apps, which has a proven track-record of delivering results. It can collect data from almost any advertising system, has a wide range of capabilities including: attribution, marketing analytics, fraud protection, deep linking, custom audiences and data flows.
Adjust is another popular mobile app tracker that allows you to work with APIs, measure organic installs, and automate your ad campaigns.
Firebase is a free analytics system for mobile apps owned by Google. This can be used for advertising platforms such as Google Ads, YouTube, Google Play.
Facebook SDK is a free mobile app analytics tool for Facebook and Instagram traffic.