Because actually stopping tracking requires premium (paid) version? Or because mobile version is not a browser plugin, but virtual vpn, so it doesn't work with your real vpn?
The Disconnect website says that the free version "[blocks] malware & tracking (Desktop only)".
Yes, and also says: Upgrade to premium protection - Block malware & tracking (Desktop and mobile).
Ghostery works fine on both, desktop and mobile. It even syncs as an addon across both instances.
Huh, I had no idea. What a shame!
Why is Ghostery ad-network friendly?
They sell the metrics they collect back to the advertising networks. They're public about this, it's not a secret.