According to the description of the application, it looks for a tracker that is too far from the phone to which it was linked. This device must be connected to the Locator service. It is not only supported by Apple devices, therefore, Tracker Detect will help detect trackers from other companies.
When the app detects someone else’s tracker, it will explain how you can turn off the device and find out who owns it. Tracker Detect does not work in the background: the application needs to be launched every time you need to find someone else’s tracker, but for iOS users a similar application works in the background.