[aftbit]

Apple bans system-wide adblock as well. Mobile Safari ships with adblock IIRC but that doesn't help with all the other random apps that want to show you ads. Meanwhile, despite Google & Amazon's changes, you can still install any adblock you want on an Android device without using a computer or paying for a signing key as you'd need to on an Apple device by just downloading the APK using Chrome and installing it directly. Alternatively, you could install an alternative app store like F-droid and then install & upgrade adblock apps through there.