Yes. If you see reports of sdks proliferation in the top apps you will see strange sdks like "mobileapptracking" from has offers. They are independent firms t

Yes. If you see reports of sdks proliferation in the top apps you will see strange sdks like "mobileapptracking" from has offers. They are independent firms that can check ids from clicks and perform auditing. These firms are under assault by Apple & fb by means of removing traceable ids (uuid is gone, mac is gone, idfa is now resetable). Larger firms rely on dumb money and their audits can be crushing.