Block ads in Firefox for iOS 
support.mozilla.org
Firefox for iOS has gotten a native ad blocker, with a fixed list based on EasyList. Better than nothing, but falling short of what a standalone solution offers: aside from the lack of customization, Firefox’s blocker doesn’t block ads in web search engines or the ones on the browser’s own homepage — Mozilla’s bread and butter. The rollout is gradual, meaning it may take a while to show up on your end.
Wipr 2, the Safari ad blocker created by Kaylee Serena (and the one I use), got a new feature that extends its functionality system-wide: Filtr.
Developed over the past ten months, it makes use of a new technology introduced in version 26 of Apple’s operating systems, the URL Filter. According to Kaylee, it allows you to “to block network requests system-wide without having access to any network traffic at all, and with more granularity than previous solutions.” She says this is the first app to make use of the URL Filter.