But that's exactly what content blockers in iOS are for, they also have the benefit of not being able to send information about what's being blocked back to their apps and servers.
I myself have been using Adblock Fast for quite some time now.
Correct me if I'm wrong, but those content blockers only apply to safari, not apps, right? Blocking ads while browsing isn't really the issue I'm talking about - web ads are already fairly restricted in what they can do, especially if you have a decent browser with extensions.
With adaway on Android I'm able to block inapp ads, statistics and demographics reporting services, crash reporting services and other privacy invading services.
I myself have been using Adblock Fast for quite some time now.