Read beyond this project

These sources explain advertising and tracking services in more detail. Our app pages describe the changes provided by this project.

Source	Useful for	Keep in mind
Exodus Privacy	Android SDK profiles, categories, signatures and app reports.	An SDK found in code may be inactive. Coverage is incomplete.
Ghostery WhoTracks.Me	Web services, company relationships, categories and prevalence.	Web observations do not establish which data a particular Android app sends.
DuckDuckGo Tracker Radar	Domain ownership, classification and cookie/fingerprinting metadata.	This technical dataset does not give a complete picture of a company's practices.
Privacy International's app investigation	How investigators inspect data that was actually sent and explain the implications.	This investigation dates to 2018; its findings concern its tested sample.
Cracked Labs: Corporate Surveillance in Everyday Life	How data collection, identifier matching, profiling and data trading connect.	Published in 2017. Check newer sources for current ownership and products.
TrackerControl	Exploring app connections and recognised tracking companies on Android.	It does not decrypt TLS data. You can see the destination, but not every field that was sent.

How to read vendor documentation

An API field list can reveal far more than marketing copy. Look for automatically collected fields, persistent identifiers, optional user attributes, upload queues, opt-outs and links to other systems. An available feature may not be enabled in the app. Read the scope and limitations.

The profiles link directly to the relevant technical pages. The sources were reviewed on 28 October 2026. Both language versions explain English-language sources. A Dutch explanation does not mean the external source is available in Dutch.