I have never had a problem with adAway, worth it to mention is that I have never tried any other adblocking services on my andriod.

Edit: some news app that I use serve their ads threw the same domain as their news so that is, at least for me, hard to block.

I have no idea if adGuard is trustworthy or not, I personally use adAway which is open source and under a GPLv3 license. Perfectly satisfied with it.

Ah, gotcha.

Didn’t know this, thanks for the links.

Didn’t DDG get caught allowing some Microsoft tracking and blocking some search results a couple of years back? Personally I use Firefox and starpage as a search engine.