When comparing AdAway vs Privacy Badger, the Slant community recommends AdAway for most people. In the question“What are the best ad blockers?” AdAway is ranked 2nd while Privacy Badger is ranked 17th. The most important reason people chose AdAway is:
Use the hosts files to block ads, so it works for everything.
Specs
Ranked in these QuestionsQuestion Ranking
Pros

Pro System wide blocking
Use the hosts files to block ads, so it works for everything.

Pro Doesn't consume CPU time or memory
The app updates the hosts file periodically but doesn't need to run in the background in order to block ads, which is especially convenient for older phones.
Pro Can use systemless host
Can be used without modifying the system if rooted with magisk.
Pro Can use custom host files
Lots of people and keep their own updated host files used for blocking ads and ad away supports loading them in or even adding their source for autoloading.
Pro Automatic detection & blocking
Privacy Badger automatically detects and block third-party tracking. If it detects an advertiser or network tracking you across different websites, subsequent requests to the advertiser will be blocked.
Pro Easy to use and configure
Everything works out of the box, you don't have to select blocking lists like in other ad blockers and there's pretty much nothing to configure.
Pro Easy import & export of settings
in human-readable format
Cons

Con Needs root (by design)
Needs root to update the hosts file.
Con Won't block same domain ads
Because the host file can only redirect domains, if the ad and content are on the same domain the ad will be displayed.
