https://reports.exodus-privacy.eu.org/en/ Trackers
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What is a tracker?
See the video

A tracker is a piece of software whose task is to gather information on the person using the application, on how they use it, or on the smartphone being used. A tracker is usually distributed by companies as a SDK (Software Development Kit), a sort of ready-made toolkit, aiming to make it easier for application developers. To be noted : 'open source' trackers exist, their code is available and open to everyone.

Are all trackers created equal?
See the video

No, all trackers do not have the same function and they can present different levels of (privacy) intrusion.

Crash reporters: these trackers specialize in reporting application crashes. In other terms, their goal is to notify application developers that an app encountered a problem. As such, information collected at the time the application crashed will allow the developer to correct the bug.
Analytics: these trackers are meant to collect data usage and allow the developer to have better knowledge of their audience (for instance, to know what page you visited, or how long you remained on a given area of the page).
Profiling: these trackers' goal is to gather as much information as possible on the application user in order to build a virtual profile. To this effect, the tracker will for instance focus on the browsing history, or on the list of installed applications, and so on.
Identification: these trackers are responsible for determining your digital identity. This identity may refer to an official identity or to abstract identifiers (pseudonym, etc.). The goal will be, for example, to be able to correlate an individual's online and offline activities.
Ads: these trackers aim to identify the application user in order to serve them targeted ads. This is only possible and relevant if the user already already has a digital profile established. The go